Marks navigations as aborted when the NavigationHandle is destroyed mid
 navigation, likely due to a tab closure. This is a kill switch.

 Controls the capturing of the Ad-Auction-Signals header, and the maximum
 allowed Ad-Auction-Signals header value.

 Controls whether to include information about the page's open popup in
 AIPageContent.

 Controls whether a missing subframe while generating the APC proto is
 silently dropped. If false, the entire APC is considered failed when this
 happens. When true, the subframe is simply skipped but the rest of APC
 generation is unaffected.

 Enables URN URLs like those produced by Protected Audience auctions to be
 displayed by iframes (instead of requiring fenced frames).

 Blocks the grammar suggestion span in composition mode.

 Blocks the misspelling suggestion span in composition mode.

 Capture Android key event objects to send them to the web contents when the
 IME sends composition texts.

 Enables the caret browsing a11y feature - can use arrow keys to navigate
 through web pages.

 DevTools frontend for Android.

 Enables media to continue playing in the background.

 Fallback to next named service slot if launching a privileged service process
 hangs. In practice, this means if GPU launch hanges, then retry it once.

 Enables IMEs to insert media content such as images, gifs and stickers.

 Enables a blur animation of the current page when navigating away from it.

 Enables the physical keyboard autocorrect underline feature.

 Enables the physical keyboard autocorrect underline feature V2.

 Warm up a spare renderer after each navigation on Android.

 Controls whether AOM/VPX decoders should use the presentation thread type.

 Whether to allow attaching an inner WebContents not owned by the outer
 WebContents. This is for prototyping purposes and should not be enabled in
 production.

 Enables audio ducking.

 Enables flash to be ducked by audio focus. This is enabled on Chrome OS which
 has audio focus enabled.

 Launches the audio service on the browser startup.

 Runs the audio service in a separate process.

 Enables the audio-service sandbox. This feature has an effect only when the
 kAudioServiceOutOfProcess feature is enabled.

 A thread pool system for effective usage of RealtimeAudioWorkletThread
 instances.

 A server-side switch for the kRealtimeAudio thread type of
 RealtimeAudioWorkletThread object. This can be controlled by a field trial,
 it will use the kNormal type thread when disabled.

 If enabled, we start forwarding submissions with source
 DOM_MUTATION_AFTER_AUTOFILL, even for non-password forms.

 LINT.IfChange(autofill_across_iframes_ios)
 Controls whether to flatten and fill cross-iframe forms on iOS.
 TODO(crbug.com/40266699) Remove once launched.

 Throttles child frame extraction to a maximum number of child frames that
 can be extracted by applying the following rules: (1) remove the child frames
 from an individual form that busts the limit and (2) stop extracting child
 frames on other forms once the limit is reached across forms.

 Controls whether to trigger form extraction when detecting a form activity on
 a xframe form. Only effective when Autofill is enabled across iframes
 (kAutofillAcrossIframesIos).

 If enabled, ActorFormFillingServiceImpl will attempt to split requests for a
 form section fill (when relevant) into two sub-fills - one for a "contact
 info" sub-section and one for an "address" sub-section.

 Kill switch: If enabled, ChromeAutofillClient may enter the actor mode,
 changing how the UI, parsing and the server predictions work. For more
 context see: go/autofill-actor-mode-implementation

 Controls whether to rewrite the credit card trigger field to the first
 credit card number field in the same section.

 Controls whether all import tasks are suppressed when an Actor task is
 active on the tab in question. This also suppresses silent updates and
 saving to Autocomplete.

 When enabled, other Autofill AI data types are controlled by the
 autofillOtherDatatypesEnabled policy and extension API. Previously, these
 were controlled by autofillAddressesEnabled; consequently, Autofill AI no
 longer depends on address-based Autofill being enabled.

 Kill switch: If enabled, NameFieldParser will parse 'Last name, First name'
 sequence.
 TODO(crbug.com/329016404): Remove after M146 branch point (2026-02-09).

 Feature flag to control displaying of Autofill suggestions on
 unclassified fields based on prefix matching. These suggestions are displayed
 after the user typed a certain number of characters that match some data
 stored in the user's profile.
 TODO(crbug.com/381994105): Cleanup when launched.

 Feature flag to controls whether Autofill on typing suggestions will have a
 strike database.

 Feature flag controlling the display of surveys when a user declines the
 save prompt of Autofill address and a user does not have any address stored.
 The goal is to understand the reason and work towards improving acceptance.

 Feature flag controlling the display of surveys when a user does not
 accept an Autofill suggestion. The goal is to understand the reason and work
 towards improving acceptance.

 Feature flag to control the displaying of an ongoing hats survey that
 measures users perception of Autofill. Differently from other surveys,
 the Autofill user perception survey will not have a specific target
 number of answers where it will be fully stop, instead, it will run
 indefinitely. A target number of full answers exists, but per quarter. The
 goal is to have a go to place to understand how users are perceiving autofill
 across quarters.

 If enabled (and if AutofillAiServerModel is also enabled), this ignores
 the may_run_server_model boolean sent by the Autofill server and, instead,
 queries the server model for every encountered form that is not already
 cached locally.
 Only intended for testing.

 If enabled Autofill AI becomes available by default and the previous enable
 toggle controls whether online model runs and MQLS logging are allowed.
 TODO(crbug.com/440488776): Remove once clean up happens.

 Kill switch. If enabled, the EntityDataManager is created irrespective of
 whether other features are enabled. This is necessary so that cleaning up the
 browsing data also removes data if the user left the study.

 If enabled, AutofillAi entities will be deduped on every major milestone.

 When enabled, a HaTS survey is shown after a walletable suggestion is
 displayed and the form submitted. The survey does not require the suggestion
 to be accepted.

 If enabled, no GeoIp requirements are imposed for AutofillAi.
 Note that this feature can be modified as follows (all assuming that
 kAutofillAiIgnoreGeoIp is enabled):
 - If both kAutofillAiIgnoreGeoIpAllowlist and
   kAutofillAiIgnoreGeoIpBlocklist are empty, then all geo IPs are
   permitted.
 - If only kAutofillAiIgnoreGeoIpBlocklist is non-empty, then all geo ips
   but those in kAutofillAiIgnoreGeoIpBlocklist are permitted.
 - If kAutofillAiIgnoreGeoIpAllowlist is non-empty, then only geo ips in
   kAutofillAiIgnoreGeoIpAllowlist are permitted.

 Both the allowlist and the blocklist are expected to consist of
 comma-separated uppercase two-digit country codes (see documentation of
 GeoIpCountryCode.)

 If enabled, Autofill AI will use a new update prompt on Desktop that shows
 both the previous and the new value of an updated entity attribute.

 If enabled, Autofill AI filling suggestion do not have an icon.

 If enabled, AutofillAi supports order entities.

 If enabled, AutofillAi requires re-auth when filling/viewing sensitive
 fields. As part of this feature sensitive fields are also obfuscated during
 suggestion generation time.
 TODO(crbug.com/468236932): Remove once feature is launched.

 When enabled, a HaTS survey is shown after the save prompt for a walletable
 entity was interacted with.

 If enabled, the client may trigger the server model for AutofillAI type
 predictions.

 If enabled, AutofillAi supports shipment entities.

 Controls whether a banner is shown in settings when wallet data sharing is
 disabled.

 If enabled, the client may trigger the server model for AutofillAI type
 predictions using Private AI Compute.

 If enabled, votes for the format of flight number fields are uploaded. For
 example, if there is a flight number "LH89" on file, a submitted value of
 "89" on a field with type FLIGHT_RESERVATION_FLIGHT_NUMBER uploads "N".

 If enabled, AutofillAi supports flight reservation entities from Google
 Wallet.

 If enabled, AutofillAi supports private passes entities from Google Wallet.

 If enabled, Wallet private pass entries in settings link to their pass
 details page rather than the generic pass overview page.

 If enabled, AutofillAi supports vehicle registration entities from Google
 Wallet.

 Enables the second iteration AutofillAI.

 When enabled, autofill will fill not skip filling fields that had an initial
 value which was modified.

 If enabled, on Android desktop, the Autofill keyboard accessory will have a
 new behavior and design.
 TODO(crbug.com/438125774): Remove when launched.

 If enabled, on Android desktop, Autofill keyboard accessory will be
 suppressed when there are no autofill suggestions.

 Controls whether user tap on an element is needed to show autofill
 suggestions. If enabled, this flag would disable android autofill suggestions
 if the focus on an element is Javascript-originated.
 DidReceiveLeftMouseDownOrGestureTapInNode() will show suggestions if the
 focus change occurred as a result of a gesture. See crbug.com/730764 for why
 showing autofill suggestions as a result of JavaScript changing focus is
 enabled on WebView.
 TODO(crbug.com/40286775) Clean up autofill feature flag
 kAutofillAndroidDisableSuggestionsOnJSFocus

 If enabled, on Android, form fields are retrieved
 by comparing FormFieldIds instead of the set of attributes. This flag affects
 some of the logic in AndroidAutofillProvider.
 TODO(crbug.com/456526604): Remove when launched.

 If enabled, on Android, the Autofill keyboard accessory will not be
 displayed attached to the keyboard but will be placed below or above the
 focused field. It works only for large form factor devices like tablets or
 desktops.
 TODO(crbug.com/438125774): Remove when launched.

 Feature flag for kAutofillAtMemory.

 Controls whether the Autosuggest nudging logic is used. If enabled, user are
 encouraged to use the AtMemory feature.

 When enabled, the placeholder is not considered a label fallback on the
 renderer side anymore. Instead, local heuristic will match regexes against
 either the label or the placeholder, depending on how high quality the label
 is. If no matche is found, local heuristics fall back to the other value.
 This feature can be thought of as "lightweight" multi-label support.
 TODO(crbug.com/320965828): Remove when launched.

 If enabled, our FormEventLogger will start emitting events for fields
 annotated with an unrecognized HTML "autocomplete" attribute.

 Same as kAutofillAddressUserPerceptionSurvey but for credit card forms.

 If enabled, FormParsingTracker will wait up to 1 second
 for Autofill to finish parsing forms pesent on a given tab before capturing
 APC. For more context see: go/autofill-actor-mode-implementation
 TODO(crbug.com/479794574): Convert to killswitch if no regressions are
 spotted.

 Kill switch for Autofill address import.

 Kill switch for Autofill filling.

 LINT.IfChange(autofill_disallow_more_hyphen_like_labels)
 When enabled, the list of characters a label cannot exclusively consist of
 includes more hyphen-like characters: em-dash, minus sign and fullwidth
 hyphen-minus.
 TODO(crbug.com/440039204): Remove when launched.

 If enabled, autofill availability event will not be updated in
 BrowserAutofillManager::OnFocusOnFormField().

 Controls an ablation study in which autofill for addresses and payment data
 can be suppressed.

 Enables a new implementation for address field parsing that is based on
 backtracking.

 When enabled, FormFieldParser::MatchesRegexWithCache tries to avoid
 re-computing whether a regex matches an input string by caching the result.
 The result size is controlled by
 kAutofillEnableCacheForRegexMatchingCacheSizeParam.

 Controls whether the deduplication process for Autofill profiles is run on a
 background thread to avoid blocking the UI thread.
 TODO(crbug.com/496889243): Remove when launched.

 Enables a couple of improvements to credit card expiration date handling:
 - The autocomplete attribute values are rationalized with format strings
   like MM/YY from placeholders and labels in mind.
 - more fill follow.
 TODO(crbug.com/40266396): Remove once launched.

 Control if Autofill supports German transliteration.
 TODO(crbug.com/328968064): Remove when/if launched.

 If enabled, the import of unchanged values for ADDRESS_HOME_COUNTRY and
 ADDRESS_HOME_STATE fields is enabled.
 TODO(crbug.com/40137859): Remove once launched.

 Controls whether to save the first number in a form with multiple phone
 numbers instead of aborting the import.
 TODO(crbug.com/40742746) Remove once launched.

 When enabled, Autofill will help users fill in non-affiliated loyalty cards
 on loyalty card only fields.

 When enabled, Autofill will use heuristics to identify OTP fields.

 Kill switch for saving entities to wallet from settings.

 Kill switch: If enabled, AutofillField may not suppress suggestions on
 field that has autocomplete=unrecognized attribute.

 If enabled, the missing merge modes will be re-enabled on nodes. To do that,
 MergeMode::kMergeChildrenAndReformatIfNeeded will be also added to all the
 nodes where required.
 TODO(crbug.com/447111009): Remove when launched.

 When enabled, chrome will support home and work addresses from account.
 TODO: crbug.com/354706653 - Clean up when launched.

 When enabled, chrome will support name and email address profile.
 TODO(crbug.com/356845298): Clean up when launched.

 Enables extended zip code validation.
 TODO(crbug.com/434140055): Clean up when launched.

 If enabled, only non-ad frames are extracted.
 Otherwise, non-ad frames as well as visible ad frames are extracted.
 "Extracted" means that FormFieldData::child_frames is populated, which is
 necessary for flattening these forms.
 The forms in those frames are extracted either way.
 TODO(crbug.com/40196220): Remove once launched.

 If enabled, removes address field values that contain words "select",
 "choose", or "optional" during profile import.
 TODO(crbug.com/485170688): Remove when launched.

 When enabled, improves heuristic regexes for state classification to avoid
 misclassification as civil state.
 TODO(crbug.com/465491175): Cleanup when launched.

 If enabled, WebFormElement applies the same special case to nested forms
 as it does for the outermost form. The fix is relevant only to Autofill.
 For other callers of HTMLFormElement::ListedElements(), which don't traverse
 shadow trees and flatten nested forms, are not affected by the feature at
 all. This is a kill switch.

 Kill switch: Changes the behavior of Form[Field]Data::DeepEqual().
 TODO(crbug.com/40183094): Turn this into a kill switch after a few
 weeks on canary.

 Removes logic that resets form submission tracking data upon receiving a
 FORM_SUBMISSION or PROBABLE_FORM_SUBMISSION signal. Also, fixes submission
 deduplication so that it ignores submissions that PWM doesn't act upon.
 TODO(crbug.com/40281981): Remove when launched.

 Enables the new implementation of FormFieldData::is_autofilled.
 TODO(crbug.com/393114125): Remove when launched.

 When enabled, the rewriter uses updated rewrite rules.
 TODO(crbug.com/445863287): Cleanup when launched.

 When enabled, the rationalization engine will fix misclassifications where
 a field is detected as a COUNTRY when it should be a STATE or vice versa.
 TODO(crbug.com/444180493): Cleanup when launched.

 When enabled, Greek regexes are used for parsing in branded builds.

 LINT.IfChange(autofill_ignore_checkable_elements)
 If enabled, checkboxes and radio buttons aren't extracted anymore.
 TODO(crbug.com/40283901): Remove once launched. Also remove
 - autofill::FormControlType::kInputCheckbox
 - autofill::FormControlType::kInputRadio

 When enabled, address field swapping suggestions will not include a
 suggestion matching the field's current value. This decreases noises in the
 suggestion UI.
 TODO(crbug.com/381531027): Remove when launched.

 When enabled, a new grammar for phone numbers is considered and we get
 slightly better at detecting cases where the generic regex for
 PHONE_COUNTRY_CODE matches a field that should not actually be classified as
 such.

 When enabled, (PHONE_HOME_COUNTRY_CODE, PHONE_HOME_WHOLE_NUMBER) are
 rationalized to (PHONE_HOME_COUNTRY_CODE,  PHONE_HOME_CITY_AND_NUMBER_WITHOUT_TRUNK_PREFIX).

 If enabled, global rules are applied to rewrite empty string values like
 "null" to an empty string. These rules are applied for all types during
 address normalization.

 TODO(crbug.com/346507576): Remove once the experiment is over.
 When enabled, makes autocomplete label sensitive.

 Enable the feature by default, and set the enabled percentage as a feature
 param. We are logging information of field types, autofill status and
 forms with a defined sampling rate of 10% on sessions.
 Autofill FormSummary/FieldInfo UKM schema:
 https://docs.google.com/document/d/1ZH0JbL6bES3cD4KqZWsGR6n8I-rhnkx6no6nQOgYq5w/.

 Kill switch: If enabled, ParseFormAsync() calls the parsing callback even if
 the cache is full before the parsing even starts.
 TODO(crbug.com/484285907): Clean up after April 10, 2026 (M148 branch point).

 When enabled, all behaviours related to the on-device machine learning
 model for field type predictions will be guarded.
 TODO(crbug.com/40276177): Remove when launched.

 Controls autofill popup style, if enabled it becomes more prominent,
 i.e. its shadow becomes more emphasized, position is also updated.
 TODO(crbug.com/40235454): Remove once the experiment is over.

 When Enabled Autofill server will stop applying small form rule and Chrome
 will take care of this logic.

 Improves the regex for matching augmented country code select options by
 supporting cases like +1 (234).

 If enabled, more patterns are added to the PHONE_COUNTRY_CODE regex.
 TODO(crbug.com/479503511): Remove once launched.

 If enabled, the new suggestion generation logic is used.
 TODO(crbug.com/409962888): Remove once launched.

 When enabled, cache form updates will happen in place instead of creating a
 new form and moving it back to the cache, which reduces the number of members
 that are copied.
 TODO(crbug.com/456719060): Remove once launched.

 When enabled, IsNormalizedNameVariantOf() uses a linear-time greedy
 algorithm instead of an exponential one that generates all name variants.
 TODO(crbug.com/479905438) Remove once launched.

 If enabled, prefilled country calling codes like "+49" do not prevent
 autofilling.
 TODO(crbug.com/453076638): Cleanup after M146 (after Feb 10, 2026).

 Enables detection of language from Translate.
 TODO(crbug.com/40158074): Cleanup when launched.

 When enabled, focusing on a credit card number field that was traditionally
 autofilled will yield all credit card suggestions.
 TODO(crbug.com/354175563): Remove when launched.

 Controls whether Autofill may fill across origins.
 In payment forms, the cardholder name field is often on the merchant's origin
 while the credit card number and CVC are in iframes hosted by a payment
 service provider. By enabling the policy-controlled feature "autofill" in
 those iframes, the merchant's website enable Autofill to fill the credit card
 number and CVC fields from the cardholder name field, even though this
 autofill operation crosses origins.
 TODO(crbug.com/40178859): Enable this feature.

 Controls whether Autofill warns about manual text input in cross-origin
 frames.
 This feature lives in Autofill code because of its close relationship to
 kAutofillCrossOriginAutofill.
 TODO(crbug.com/40178859): Enable this feature.

 If the feature is enabled, Autofill popups perform additional check to
 detect if they are obscured by top-level HTML form popups (e.g color picker).
 If so, Autofill Popup won't be shown.
 TODO(crbug.com/417052041): Remove when launched.

 If the feature is enabled, before triggering suggestion acceptance, the row
 view checks that a substantial portion of its content was visible for some
 minimum required period.
 TODO(crbug.com/337222641): During cleaning up, in the popup row view remove
 emitting of "Autofill.AcceptedSuggestionDesktopRowViewVisibleEnough".

 TODO(crbug.com/334909042): Remove after cleanup.
 If the feature is enabled, the Autofill popup widget is initialized with
 Widget::InitParams::z_order set to ui::ZOrderLevel::kSecuritySurface,
 otherwise the z_order is not set and defined by the widget type (see
 Widget::InitParams::EffectiveZOrderLevel()). This param makes the popup
 display on top of all other windows, which potentially can negatively
 affect their functionality.

 When enabled, we prefer a PHONE_HOME_COUNTRY_CODE heuristic type over a
 HtmlFieldType::kCountryCode.

 Replaces cached web elements in AutofillAgent and FormTracker by their
 renderer ids.
 TODO(crbug.com/40281981): Remove when launched.

 Replaces blink::WebFormElementObserver usage in FormTracker by updated logic
 for tracking the disappearance of forms as well as other submission
 triggering events.
 TODO(crbug.com/40281981): Remove when launched.

 Restricts OTP fields detection and fetching to forms that are in a frame
 with the same TLD+1 as the main frame.

 If disabled (default for many years), autofilling triggers KeyDown and
 KeyUp events that do not send any key codes. If enabled, these events
 contain the "Unidentified" key.

 TODO(crbug.com/435646513) - Clean-up after feature lands at 100% Stable.
 Enables the new experimental server-side signatures for evaluation purposes.

 TODO(crbug.com/470949499) - Clean-up after feature lands at 100% Stable.
 Enables querying the server for predictions before the form has been parsed
 locally.

 Enables uploading of more data to the Autofill server to use for computing
 signatures: go/autofill-signatures-more-data.

 When enabled, password manager and autofill bubbles will be shown based on
 the priorities of the bubbles.
 TODO(crbug.com/432429605): Remove when launched.

 If enabled, a pre-filled field will not be filled.

 If enabled, upload votes for sms otp.
 TODO(crbug.com/453999673): Clean up when launched.

 If enabled, fetch sms otp from gmscore and upload votes for sms otp.
 TODO(crbug.com/453999673): Clean up when launched.

 If this feature is enabled, the AddressFieldParser does NOT try to parse
 address lines once it has found a street name and house number or other
 combinations of fields that indicate that an address form uses structured
 addresses. This should be the default in all countries with fully supported
 structured addresses. However, if a country is not sufficiently modeled,
 autofill may still do the right thing if it recognizes "Street name, house
 number, address line 2" as a sequence.
 TODO(crbug.com/40266693) Remove once launched.

 Enables parsing of fields that combine postal code and city in France,
 e.g. a single field containing "75008 Paris".
 TODO(crbug.com/465119085): Clean up when launched.

 Enables using a custom address model for Japan, overriding the legacy one.
 TODO(crbug.com/359768803): Remove in M151.

 Enables splitting two-part zip codes into two fields while filling and
 importing split zip codes from two adjacent fields.
 TODO(crbug.com/369503318): Clean up when launched.

 Enables tracking of user edits to <select> fields that were not autofilled.

 Enables uploading fields that were autofilled with fallback types.
 TODO: crbug.com/444147005 - Clean up after this feature is rolled out.

 Enables the use of the Accessibility Annotator data adapter for Autofill AI.

 Enables using a custom address model for India, overriding the legacy one.

 When enabled, the form field parser won't try to match other attributes if
 any of the negative patterns matched.

 Replaces the secondary signature with the structural signature for Uploads.
 For Queries still only the secondary (alternative) signature is used.
 TODO(crbug.com/431737839): Clean up when roll out finishes successfully.

 Kill switch for a race-condition fix to make it a safer merge.
 TODO(crbug.com/474706752): Clean up after M146 branchpoint (Feb 10 2026).

 Allows the AutoPictureInPictureTabHelper to automatically enter
 picture-in-picture for websites with video playback (instead of only websites
 using camera or microphone).

 Allows the AutoPictureInPictureTabHelper to automatically enter
 picture-in-picture when a webpage is occluded by another window.

 Enables showing auto picture-in-picture permission details in page info.

 Enables Happiness Tracking Surveys for Auto Picture-in-Picture.

 Allows media to autoplay without a user gesture if the site has been
 granted microphone or camera permissions.

 Whether we should show a setting to disable autoplay policy.

 Enables the Enterprise Autoplay policies (AutoplayAllowed and
 AutoplayAllowlist) on Android.

 https://crbug.com/1472970

 Whether we should allow color space changes to flush AcceleratedVideoDecoder.

 Avoids copying ResourceRequest::TrustedParams when possible.

 Enable using the BackForwardCache.

 WHen this flag is enabled, the cookies modification without cookie value
 change will not cause eviction of the back/forward cache entries with
 Cache-control: no-store header.

 Set a time limit for the page to enter the cache. Disabling this prevents
 flakes during testing.

 BackForwardCacheMemoryControls is enabled only on Android to disable
 BackForwardCache for lower memory devices due to memory limitations.

 This is a kill switch for pausing microtask while the page is in the BFCache.
 Remove by m155 if things go well.

 Kill switch for Background Fetch.

 Enable background resource fetch in Blink. See https://crbug.com/1379780 for
 more details.

 Used to configure a per-origin allowlist of performance.mark events that are
 permitted to be included in slow reports traces. See crbug.com/1181774.

 If enabled, skips over ad-related entries that were silently inserted into
 session history when navigating via back/forward buttons. This extends the
 existing history manipulation intervention logic.
 See https://crbug.com/375523824.

 Redefine the oklab and oklch spaces to have gamut mapping baked into them.
 https://crbug.com/1508329

 If enabled, makes battery saver request heavy align wake ups.

 TODO(https://crbug.com/327075943): Delete this.

 TODO(https://crbug.com/431875857): Delete this.

 Block all MIDI access with the MIDI_SYSEX permission

 Boost the priority of certain loading tasks (https://crbug.com/1470003).

 If enabled, force renderer process foregrounded from CommitNavigation to
 DOMContentLoad (crbug/351953350).

 Broker file operations on disk cache in the Network Service.
 This is no-op if the network service is hosted in the browser process.

 Enables Browser Initiated Automatic Picture-in-Picture (ChAP) in dry run
 mode.

 When enabled in dry run mode, all ChAP code paths are executed with the
 exception of actually opening the video PiP window, or any other paths that
 may be visible to the user experience. This flag will be used to enable
 analyzing the feature impact and catch early any potential regressions.

 If enabled, the check for whether the IP address is publicly routable will be
 bypassed when determining the eligibility for a page to be included in topics
 calculation. This is useful for developers to test in local environment.

 Enables calling the Topics API through Javascript (i.e.
 document.browsingTopics()). For this feature to take effect, the main Topics
 feature has to be enabled first (i.e. kBrowsingTopics is enabled, and,
 either a valid Origin Trial token exists or kPrivacySandboxAdsAPIsOverride
 is enabled.)

 Decoupled with the main kBrowsingTopics feature, so it allows us to
 decouple the server side configs.

 Allows the decision to bypass redirect checks to be made based on the
 specific request.

 Allows pages with cache-control:no-store to enter the back/forward cache.
 Feature params can specify whether pages with cache-control:no-store can be
 restored if cookies change / if HTTPOnly cookies change.
 TODO(crbug.com/40189625): Remove this feature and clean up.

 When enabled allows the header name used in the blink
 CacheStorageCodeCacheHint runtime feature to be modified.  This runtime
 feature disables generating full code cache for responses stored in
 cache_storage during a service worker install event.  The runtime feature
 must be enabled via the blink runtime feature mechanism, however.

 Temporarily disabled due to issues:
 - PDF blank previews
 - Canvas corruption on ARM64 macOS
 See https://g-issues.chromium.org/issues/328755781

 Defer canvas hibernation when visibility changed.

 Don't hibernate small canvas elements.

 When hibernating, make sure that the just-used transfer memory (to transfer
 the snapshot) is freed.

 Whether to capture the source location of JavaScript execution, which is one
 of the renderer eviction reasons for Back/Forward Cache.

 Controls whether mirroring negotiations will include the AV1 codec for video
 encoding.

 NOTE: currently only software AV1 encoding is supported.
 TODO(crbug.com/40246079): hardware AV1 encoding should be added.

 Controls whether the new exponential bitrate calculate logic is used, or
 the legacy linear algorithm.
 TODO(crbug.com/302584587): This is the V2 implementation of this experiment,
 following the failure of the initial experiment.

 TODO(crbug.com/282984511): Remove after M151.

 Controls whether mirroring negotiations will include the VP9 codec for video
 encoding.

 NOTE: this is the default codec for Cast Streaming. Be careful when
 disabling.

 Controls whether mirroring negotiations will include the VP9 codec for video
 encoding.

 A video encoder is allowed to drop a frame in cast mirroring.

 CDM host verification is enabled by default. Can be disabled for testing.
 Has no effect if ENABLE_CDM_HOST_VERIFICATION buildflag is false.

 Enables the experimental Rust implementation of
 ChildProcessSecurityPolicy. See https://crbug.com/482216433.

 Clear the window.name property for the top-level cross-site navigations that
 swap BrowsingContextGroups(BrowsingInstances).

 Safety switch to allow us to revert to the previous behavior of using the
 cached bounds when the permission prompt is visible. If this feature is
 enabled (the default), we will clear the cached bounds, whenever the
 permission prompt is visible.

 Enable legacy device-memory client hint.

 Enable legacy dpr client hint.

 Enable legacy width client hint.

 Enable legacy viewport-width client hint.

 Disabling this will cause parkable strings to never be compressed.
 This is useful for headless mode + virtual time. Since virtual time advances
 quickly, strings may be parked too eagerly in that mode.

 Controls off-thread code cache consumption.

 Enables the constant streaming in the ContentCapture task.

 If enabled, content:// URLs are considered local, and won't be allowed
 to be downloaded.

 Reorders video context menu items if enabled.

 Enables the "Copy Video Frame" context menu item.

 Enables the "Save Video Frame As" context menu item.
 On Android, this is "Download Video Frame" context menu item.

 Enables the "Search Video Frame with <Search Provider>" context menu item.

 When enabled, add a new option, {imageOrientation: 'none'}, to
 createImageBitmap, which ignores the image orientation metadata of the source
 and renders the image as encoded.

 Fix for CSS font comparison logic.

 Forces D3D11VideoDecoder to use one decoder texture per picture buffer.
 Owner: media-gpu-team@chromium.org
 Expiry: When no longer needed for decode texture selection experiments.

 When enabled, Declarative CSS Modules will generate a DataURI instead of a
 Blob URL in the generated Import Map.

 Runs the media service in the GPU process on a dedicated thread.

 When enabled, puts non-isolated sites in separate SiteInstances in a default
 SiteInstanceGroup (per BrowsingInstance), rather than sharing a default
 SiteInstance.

 Defer requesting persistent audio focus until the WebContents is audible.
 The goal is to prevent silent playback from taking audio focus from
 background apps on android, where focus is typically exclusive.

 Enables deferring the creation of the speculative RFH when the navigation
 starts. The creation of a speculative RFH consumes about 2ms and is blocking
 the network request. With this feature the creation will be deferred until
 the browser initializes the network request. The speculative RFH will be
 created while the network service is sending the request in parallel.

 When enabled, HTMLTreeBuilder::Flush() will be throttled in kTextMode
 to reduce O(n^2) string copies.
 The first flush will always be allowed to complete immediately, then
 subsequent flushes will be throttled and will backoff exponentially up to a
 "max_interval". The "initial_interval" is the delay introduced after the
 first flush and is increased by "multiplier" for each subsequent flushes.
 See https://crbug.com/500385603 for more context and how the numbers were
 selected.

 When a device bound session
 (https://github.com/w3c/webappsec-dbsc/blob/main/README.md) is
 terminated, evict pages with cache-control:no-store from the
 BFCache. Note that if kCacheControlNoStoreEnterBackForwardCache is
 disabled, no such pages will be in the cache.

 Whether force-showing popovers is enabled.

 Improves the signal-to-noise ratio of network error related messages in the
 DevTools Console.
 See http://crbug.com/124534.

 Whether DevTools Live Edit (Debugger.setScriptSource usage in CDP) is
 enabled.

 Controls whether the Digital Goods API is enabled.
 https://github.com/WICG/digital-goods/

 Enables the BTM (Bounce Tracking Mitigation) feature.
 On by default to allow for collecting metrics. All potentially dangerous
 behavior (database persistence, storage deletion) will be gated by params.

 Flag used to control the TTL for user interactions (separately from the
 |kBtm| feature flag).

 Controls whether the OpusAudioDecoder is used for Opus audio decoding
 (instead of the FFmpegAudioDecoder).

 When enabled, OOPIFs will not try to reuse compatible processes from
 unrelated tabs.

 A console warning is shown when the opaque url returned from Protected
 Audience/selectUrl is used to navigate an iframe. Since fenced frames are not
 going to be enforced for these APIs in the short-medium term, disabling this
 warning for now.

 Adds an animation to document picture-in-picture resizes.

 Allows document picture-in-picture pages to request capture.

 Allow document picture-in-picture to navigate.  This should be disabled
 except for testing.

 Enable drawing under System Bars within DisplayCutout.

 Drop input events at the browser process until the process receives the first
 signal that the renderer has sent a frame to cc (https://crbug.com/40057499).

 Enables the Email Verification Protocol (EVP).
 Note that actual exposure of the EVP API to web content is controlled by the
 flag in RuntimeEnabledFeatures on the blink side. See also the use of
 kSetOnlyIfOverridden in content/child/runtime_features.cc. We enable it here
 by default to support use in origin trials.

 Enables canvas 2d methods BeginLayer and EndLayer.

 Extends console.timestamp to support adding deep-links into the DevTools
 Performance Panel, which (when clicked) call into a DevTools extension.

 Enables support for >8 audio channel layouts (i.e., 5.1.4 and 7.1.4).

 Whether to respect loading=lazy attribute for images when they are on
 invisible pages.

 Controls whether the Mirroring Service will fetch, analyze, and store
 information on the quality of the session using RTCP logs.

 Enables user control over muting tab audio from the tab strip.

 Enables tracking the occlusion of encrypted video elements.

 Enforce same-origin check for dedicated worker script URLs.
 See https://crbug.com/496253755.

 Prevents an opener from being returned when a BlobURL is cross-site to the
 window's top-level site.

 Enforce same-origin check for shared worker script URLs.
 See https://crbug.com/504073872.

 Ensures the renderer is not dead when getting the process host for a site
 instance.

 Enables extended video bitstream validation for H.264 and H.265.

 Enables support for External Clear Key (ECK) key system for testing on
 supported platforms. On platforms that do not support ECK, this feature has
 no effect.

 Fade in scrollbar at may-begin wheel event. This only works on macOS.

 Prevents UrlProvisionFetcher from making a provisioning request. If
 specified, any provisioning request made will not be sent to the provisioning
 server, and the response will indicate a failure to communicate with the
 provisioning server.

 Falls back to other decoders after audio/video decode error happens. The
 implementation may choose different strategies on when to fallback. See
 DecoderStream for details. When disabled, playback will fail immediately
 after a decode error happens. This can be useful in debugging and testing
 because the behavior is simpler and more predictable.

 FeatureManagement gate for Live Translate on ChromeOS devices. No impact
 outside of CrOS.

 Enables JavaScript API to intermediate federated identity requests.
 Note that actual exposure of the FedCM API to web content is controlled
 by the flag in RuntimeEnabledFeatures on the blink side. See also
 the use of kSetOnlyIfOverridden in content/child/runtime_features.cc.
 We enable it here by default to support use in origin trials.

 Enables the FedCM ambient UI.

 Enables RPs to enhance autofill with federated accounts fetched by the FedCM
 API.

 Enables usage of the FedCM Delegation API.

 Enables FedCM to support login request initiated by the embedder.

 Enables the spec-compliant 'error' attribute in IdentityCredentialError while
 deprecating the legacy 'code' attribute.

 Enables usage of the FedCM IdP Registration API.

 Enables Lightweight FedCM Mode

 Enables usage of the FedCM API with metrics endpoint at the same time.

 Enables usage of the FedCM IdP-Initiation API.

 Enables Nonce usage in Params

 Enables subdomain-first discovery for the FedCM well-known file. Fetches
 https://web-identity.<eTLD+1>/.well-known/web-identity first and falls back
 to the apex URL on failure (network error, malformed JSON, or provider_urls
 length > 1).

 Controls whether FedCM requires explicit endpoint declaration in well-known
 files when client_metadata is used. When enabled, accounts_endpoint and
 login_url must be present in .well-known/web-identity for privacy validation.

 Enables bypassing the well-known file enforcement.

 Enable the <fencedframe> element; see crbug.com/1123606. Note that enabling
 this feature does not automatically expose this element to the web, it only
 allows the element to be enabled by the runtime enabled feature, for origin
 trials.

 Temporarily un-disable credentials on fenced frame automatic beacons until
 third party cookie deprecation.
 TODO(crbug.com/1496395): Remove this after 3PCD.

 Enable sending event-level reports through reportEvent() in cross-origin
 subframes. This requires opt-in both from the cross-origin subframe that is
 sending the beacon as well as the document that contains information about
 the reportEvent() endpoints.

 Enables browser-side focus verification when crossing fenced boundaries.

 Controls functionality related to network revocation/local unpartitioned
 data access in fenced frames.

 Enables a bug fix that allows a 'src' allowlist in the |allow| parameter of a
 <fencedframe> or <iframe> loaded with a FencedFrameConfig to behave as
 expected. See: https://crbug.com/349080952

 When enabled, the field classification model uses runtime caching to not run
 models on the same inputs multiple times.
 TODO(crbug.com/371933424). Clean up when launched, if not used for Autofill
 experiments.

 Blocks picture-in-picture windows while file dialogs are open.

 Tucks picture-in-picture windows while file dialogs are open.

 File handling icons. https://crbug.com/1218213

 See https://github.com/WICG/turtledove/blob/main/FLEDGE.md
 Enables FLEDGE implementation. See https://crbug.com/1186444.

 See
 https://github.com/WICG/turtledove/blob/main/FLEDGE_browser_bidding_and_auction_API.md

 See in the header.

 Enable enforcement of permission policy for
 privateAggregation.contributeToHistogramOnEvent.

 See the header for more details.

 Provides a configurable limit on the number of
 selectableBuyerAndSellerReportingIds for which the browser fetches k-anon
 keys. If the SelectableBuyerAndSellerReportingIdsFetchedFromKAnonLimit is
 negative, no limit is enforced.

 See https://github.com/WICG/turtledove/issues/1334

 Feature flag to truncate the set of selectableBuyerAndSellerReportingIds
 to only those for which k-anon status was fetched, as limited by the
 kFledgeSelectableBuyerAndSellerReportingIdsFetchedFromKAnonLimit parameter
 defined above. This is only meaningful if
 kFledgeSelectableBuyerAndSellerReportingIdsFetchedFromKAnonLimit is >= 0.

 Forces software video encoders to be used for low resolutions.
 Enabled-by-default, except for Android where SW encoder for H26x and AV1 are
 (sometimes) not available.
 TODO: crbug.com/40068556 - Enable for Android and remove this flag.

 Whether a memory pressure signal in a renderer should be forwarded to Blink
 isolates. Forwarding the signal triggers a GC (critical) or starts
 incremental marking (moderate), see v8::Heap::CheckMemoryPressure.

 Enables scrollers inside Blink to store scroll offsets in fractional
 floating-point numbers rather than truncating to integers.

 Enables the frequency capping for detecting large sticky ads.
 Large-sticky-ads are those ads that stick to the bottom of the page
 regardless of a user’s efforts to scroll, and take up more than 30% of the
 screen’s real estate.

 Enables the frequency capping for detecting overlay popups. Overlay-popups
 are the interstitials that pop up and block the main content of the page.

 When getDisplayMedia() is invoked, the user sees and interacts with
 a Chromium prompt through which they choose which tab/window/screen
 to share. If this flag is enabled, then when the user chooses to
 share, transient activation is conferred on the capturing Web application.

 TODO(crbug.com/420406085): Remove after January 2028.
 Keep this flag around at least until that date.

 If enabled, then display audio track permission failures are ignored.

 Auto-dismiss global media controls.

 Enable selection of audio output device in Global Media Controls.

 Enable global VA-API lock. Disable this to use lock-free VA-API function
 calls for thread safe backends.

 Whether GuestViews (see components/guest_view/README.md) are implemented
 using MPArch inner pages. See https://crbug.com/40202416

 When enabled, H.264 keyframe detection becomes stricter for samples whose avc
 config does not provide SPS/PPS. In that case, an IDR alone is not
 sufficient, SPS+PPS must appear in-band to mark it as a keyframe.

 Enables handling of hardware media keys for controlling media.

 Enables hardware secure decryption if supported by hardware and CDM.
 NOTE: For Windows platform, hardware secure decryption is available via
 PlayReady SL3000.
 TODO(xhwang): Currently this is only used for development of new features.
 Apply this to Android and ChromeOS as well where hardware secure decryption
 is already available.

 Enables hardware secure AV1 decoding if supported by the hardware
 and the OS Content Decryption Module (CDM).

 Same as kHardwareSecureDecryption above, but only enable experimental
 sub key systems. Which sub key system is experimental is key system specific.

 Allows automatically disabling hardware secure Content Decryption Module
 (CDM) after failures or crashes to fallback to software secure CDMs. If this
 feature is disabled, the fallback will never happen and users could be stuck
 in playback failures.

 Enables hardware secure VP9 decoding if supported by the hardware
 and the OS Content Decryption Module (CDM).

 If enabled, Glic will start captioning as soon as a profile is loaded.

 Controls headless Live Caption experiment, which is likely unstable.

 Enables or disables the intervention that unloads ad iframes with intensive
 resource usage.

 Enables or disables sending the heavy ad report to the root ad frame's
 embedder.

 Enables or disables reporting on the intervention that unloads ad iframes
 with intensive resource usage.

 Enables or disables the privacy mitigations for the heavy ad intervention.
 This throttles the amount of interventions that can occur on a given host in
 a time period. It also adds noise to the thresholds used. This is separate
 from the intervention feature so it does not interfere with field trial
 activation, as this blocklist is created for every user, and noise is decided
 prior to seeing a heavy ad.

 This flag unconditionally enables the SQLite backing store. Used for
 about:flags.

 Controls whether we ignore duplicate navigations or not, in favor of
 preserving the already ongoing navigation.

 Enables rendering the top chrome in WebUI. This is a central flag to enable
 the WebUI implementation of top chrome. Individual features will be
 additionally gated by this flag.

 Whether initial WebUI navigations should synchronously go from navigation
 start to commit, by doing e.g. in-renderer body loading.

 Kill switch for the GetInstalledRelatedApps API.

 Allow Windows specific implementation for the GetInstalledRelatedApps API.

 When enabled, wake ups from throttleable TaskQueues are limited to 1 per
 minute in a page that has been backgrounded for 5 minutes.

 Intensive wake up throttling is enforced in addition to other throttling
 mechanisms:
  - 1 wake up per second in a background page or hidden cross-origin frame
  - 1% CPU time in a page that has been backgrounded for 10 seconds

 Feature tracking bug: https://crbug.com/1075553

 The base::Feature should not be read from; rather the provided accessors
 should be used, which also take into account the managed policy override of
 the feature.

 The base::Feature is enabled by default on all platforms. However, on
 Android, it has no effect because page freezing kicks in at the same time. It
 would have an effect if the grace period ("grace_period_seconds" param) was
 reduced.

 InterestFeedV2 takes precedence over InterestFeedContentSuggestions.
 InterestFeedV2 is cached in ChromeCachedFlags. If the default value here is
 changed, please update the cached one's default value in CachedFeatureFlags.

 Enables the internal Media Session logic without enabling the Media Session
 service.

 Sets IO threads to kInteractive all the time.

 Enable support for isolated web apps. This will guard features like serving
 isolated web apps via the isolated-app:// scheme, and other advanced isolated
 app functionality. See https://github.com/reillyeon/isolated-web-apps for a
 general overview.
 Please don't use this feature flag directly to guard the IWA code.  Use
 IsolatedWebAppsPolicy::AreIsolatedWebAppsEnabled() in the browser process or
 check kEnableIsolatedWebAppsInRenderer command line flag in the renderer
 process.

 Enables process isolation of fenced content (content inside fenced frames)
 from non-fenced content. See
 https://github.com/WICG/fenced-frame/blob/master/explainer/process_isolation.md
 for rationale and more details.

 Alternative to switches::kIsolateOrigins, for turning on origin isolation.
 List of origins to isolate has to be specified via
 kIsolateOriginsFieldTrialParamName.

 Allow process isolation of iframes with the 'sandbox' attribute set. Whether
 or not such an iframe will be isolated may depend on options specified with
 the attribute. Note: At present, only iframes with origin-restricted
 sandboxes are isolated.

 When enabled, forces the priority of isolates in hidden renderers to
 best-effort, overriding the effect of kIsolatesPriorityUseProcessPriority
 (isolates in visible renderer will still get their priority derived from
 process priority).

 When enabled, derives isolate priority from the more granular process
 priority (user-blocking, user-visible, best-effort) instead of renderer
 visibility (visible, hidden).

 Subtlety: A renderer hosting a hidden frame playing audio will have
 user-blocking priority. Without this feature, an isolate in this renderer
 would have best-effort priority (derived from the visibility), whereas with
 the feature it would be user-blocking. To keep isolates in hidden renderers
 at best-effort priority, but otherwise use the process priority, enable this
 feature along with "IsolatesPriorityBestEffortWhenHidden".

 Enable the prototype global optimization of tuneables via finch.  See
 media/base/tuneable.h for how to create tuneable parameters.

 Kill-switch for the tracking of keep-alive requests blocked by client.

 If enabled, the body of EmulateLoadStartedForInspector is executed only
 once per Resource per ResourceFetcher, and thus duplicated network load
 entries in DevTools caused by EmulateLoadStartedForInspector are removed.
 https://crbug.com/1502591

 Use "style" and "json" destinations for CSS and JSON modules.
 https://crbug.com/1491336

 Logs a DumpWithoutCrashing() call each time the Speech On-Device API (SODA)
 fails to load. Used to diagnose issues when rolling out new versions of the
 SODA library.

 When enabled, creation of the BrowserInterfaceBroker on RenderFrameHostImpls
 becomes lazy. i.e. the BrowserInterfaceBroker is constructed only when it is
 needed, typically when a renderer process becomes associated with the frame.
 See https://crbug.com/450912216 for more details.

 Enables more conservative settings for ParkableString: suspend parking in
 foreground, and increase aging tick intervals.

 A feature to reduce the set of resources fetched by No-State Prefetch.

 Enables the Live Caption feature on supported devices.

 Enable automatic downloading of speech recognition language packs.

 Enable experimental Live Caption languages.

 Log the amount of flickering between partial results. This measures how often
 the system revises earlier outputs, to quantify the system's output
 instability or flicker. Intuitively, it measures how many tokens must be
 truncated from the previous text before appending any new text. The erasure
 of the current timestep can be calculated from its longest common prefix with
 the previous timestep.

 Enable or disable Live Caption from the right click menu.

 Use a greedy text stabilizer to reduce flickering when translating partial
 speech recognition results.

 Use a wait-k approach to reduce flickering when translating partial speech
 recognition results.

 Enable or disable Live Caption support for WebAudio.

 If this is enabled, LoadingPredictor restricts the number of preconnects for
 the same destination to one.

 Makes network loading tasks unfreezable so that they can be processed while
 the page is frozen.

 When enabled, a HaTS survey is shown after the user visited "Contact info"
 settings page.

 When enabled, a HaTS survey is shown after the user visited "Identity docs"
 settings page.

 When enabled, a HaTS survey is shown after the user visited Password Manager
 management surface.

 When enabled, a HaTS survey is shown after the user visited "Payments"
 settings page.

 When enabled, a HaTS survey is shown after the user visited "Travel"
 settings page.

 When enabled, a HaTS survey is shown after the user visited "Your saved info"
 settings page.

 Allows Chrome to reconfigure the sink to match the channel count of the
 source audio data. This ensures opening of an audio output stream to match
 the source audio data channels, to signal to the downstream audio
 subsystem that the audio must be processed according to the source audio
 channel count.
 TODO(crbug.com/445215599): This should be replaced with a MediaClient
 mechanism if it works as intended.

 The MBI mode controls whether or not communication over the
 AgentSchedulingGroup is ordered with respect to the render-process-global
 legacy IPC channel, as well as the granularity of AgentSchedulingGroup
 creation. This will break ordering guarantees between different agent
 scheduling groups (ordering withing a group is still preserved).
 DO NOT USE! The feature is not yet fully implemented. See crbug.com/1111231.

 When enabled, MediaCapabilities will check with GPU Video Accelerator
 Factories to determine isPowerEfficient = true/false.

 Enable Media Capabilities with finch-parameters.

 The following Media Engagement flags are not enabled on mobile platforms:
 - MediaEngagementBypassAutoplayPolicies: enables the Media Engagement Index
   data to be esude to override autoplay policies. An origin with a high MEI
   will be allowed to autoplay.
 - PreloadMediaEngagementData: enables a list of origins to be considered as
   having a high MEI until there is enough local data to determine the user's
   preferred behaviour.

 Allows per-site special processing for media links.

 Enables sending MediaLog to the log stream, which is useful for easier
 development by ensuring logs can be seen without a remote desktop session.
 Only affects builds when DCHECK is on for non-ERROR logs (ERROR logs are
 always sent to the log stream). Enabled by default on Android and ChromeOS.

 Enable aggregate power measurement for media playback.

 If enabled, users can request Media Remoting without fullscreen-in-tab.

 Enables accurate dropped frame count for MediaStreamVideoSource.
 TODO(crbug.com/432367602): Remove after M143.

 If enabled, chrome would inform Glic once it starts trasncribing, if Glic
 requested to be informed.

 Controls the configurablity of the navigation confidence noise level.
 If the feature is not enabled, then the epsilon value will be 1.1.

 When NavigationNetworkResponseQueue is enabled, the browser will schedule
 some tasks related to navigation network responses in a kHigh priority
 queue.

 Used to control the collection of anchor element metrics (crbug.com/856683).
 If kNavigationPredictor is enabled, then metrics of anchor elements
 in the first viewport after the page load and the metrics of the clicked
 anchor element will be extracted and recorded.
 Note that the desktop roll out is being done separately from android. See
 https://crbug.com/40258405

 Used to control the collection of new viewport related anchor element
 metrics. Metrics will not be recorded if either this or kNavigationPredictor
 is disabled.

 Puts network quality estimate related Web APIs in the holdback mode. When the
 holdback is enabled the related Web APIs return network quality estimate
 set by the experiment (regardless of the actual quality).

 If the network service is enabled, runs it in process.

 Feature which disables caching a previous selection menu object.

 Feature which holdbacks NoStatePrefetch on all surfaces.

 Enables the On-Device Web Speech feature on supported devices.

 Enables on-device speech recognition using on-device Gemini Nano.

 Enables on-device speech recognition using on-device TinyGemma.

 When enabled, fast-exits the mixed-content checks for secure URLs.

 Improve ServiceWorkerAutoPreload coverage by using more accurate web request
 proxy detection.

 If enabled, ServiceWorkerAutoPreload will not start if any installed
 extension has the webRequest or declarativeNetRequest permission, or if
 the request is initiated by <webview>.

 If not enabled, ServiceWorkerAutoPreload will not start if any installed
 extension has the webRequest, declarativeNetRequest, or webview
 permission. On Desktop platforms, there are often default extensions with the
 webview permission, meaning ServiceWorkerAutoPreload is almost always not
 enabled.

 Controls the Origin-Agent-Cluster header. Tracking bug
 https://crbug.com/1042415; flag removal bug (for when this is fully launched)
 https://crbug.com/1148057.

 The name is "OriginIsolationHeader" because that was the old name when the
 feature was under development.

 Enables origin-keyed processes by default, unless origins opt out using
 Origin-Agent-Cluster: ?0. This feature only takes effect if the Blink feature
 OriginAgentClusterDefaultEnable is enabled, since origin-keyed processes
 require origin-agent-clusters.

 Only used for disabling overlay fullscreen (aka SurfaceView) in Clank.

 History navigation in response to horizontal overscroll (aka gesture-nav).

 Enable defer commits to avoid flash of unstyled content, for all navigations.

 Causes the AVC parser to additionally parse and indicate when an SEI
 recovery point with recovery_frame_cnt=0 has been found.

 Enables the use of the PaintCache for Path2D objects that are rasterized
 out of process.  Has no effect when kCanvasOopRasterization is disabled.

 We plan to remove the background pause timer feature from WebMediaPlayerImpl.
 We received reports that suggest that this feature's codepath hasn't been
 exercised for a long time. This is a finch killswitch to rollback to the
 previous behavior if we find any problems while disabling this feature.

 When this feature is enabled, partial storage cleanup will be
 disabled for the GPU disk cache. (Performance improvement)

 Whether web apps can run periodic tasks upon network connectivity.

 Adds a mute/unmute button to the Video Picture-in-Picture overlay window.

 Enables tracking the position of picture-in-picture windows to know when they
 occlude certain widgets.

 Enables the animation of the Picture-in-Picture window creation.

 Allows usage of OS-level (platform) audio encoders.

 Enables the preemptive downloading of the SODA binary and language
 packs.

 Whether we should composite a PLSA (paint layer scrollable area) even if it
 means losing lcd text.

 Allow starting prefetch request from off the main thread. Please see
 crbug.com/452389538 for more details.

 Use code paths for prefetch/prerender integration.
 See also kPrerender2FallbackPrefetchSpecRules.

 If explicitly disabled, prefetch proxy is not used.

 Make PrefetchRequestStatusListener notifications async.
 https://crbug.com/496807663

 Launch mouse hover feature only on Desktop. Note that Android Desktop mode is
 currently out of scope.

 Killswitch for UA override issue fix (crbug.com/441612842) in preloading.

 If enabled, the feature allows the prerender host to be reused for the
 future same-site page prerender if marked as reusable.

 If enabled, the feature allows user to see a preview of their handwriting
 gestures (Select and Delete gestures).

 Enables exposure of ads APIs in the renderer: Attribution Reporting,
 FLEDGE, Topics, along with a number of other features actively in development
 within these APIs.

 Enables the Private Aggregation API.

 Adds some additional functionality (new reserved event types, base values)
 to things enabled by
 kPrivateAggregationApiEnabledInProtectedAudience.

 Reuses RenderProcessHost up to a certain threshold. This mode ignores the
 soft process limit and behaves just like a process-per-site policy for all
 sites, with an additional restriction that a process may only be reused while
 the number of main frames in that process stays below a threshold.

 When enabled, ProcessSelectionDeferringConditions will be run. This allows
 the embedder to provide conditions that may delay the final process selection
 until the conditions have their results.

 Fires the pushsubscriptionchange event defined here:
 https://w3c.github.io/push-api/#the-pushsubscriptionchange-event
 for subscription refreshes, revoked permissions or subscription losses

 Fires the pushsubscriptionchange event defined here:
 https://w3c.github.io/push-api/#the-pushsubscriptionchange-event
 upon manual resubscription to previously unsubscribed notifications.

 Enables Media Engagement Index recording. This data will be used to determine
 when to bypass autoplay policies. This is recorded on all platforms.

 Enables Media Engagement Index recording for Web Audio playbacks.

 Reduce the amount of information in the default 'referer' header for
 cross-origin requests.

 When enabled, sends SubresourceResponseStarted IPC only when the user has
 allowed any HTTPS-related warning exceptions. From field data, ~100% of
 subresource notifications are not required, since allowing certificate
 exceptions by users is a rare event. Hence, if user has never allowed any
 certificate or HTTP exceptions, notifications are not sent to the browser.
 Once we start sending these messages, we keep sending them until all
 exceptions are revoked and browser restart occurs.

 Whether blink::Resource deletes its decoded data on memory pressure.

 Whether blink::MemoryCache and blink::ResourceFetcher release their
 strong references to resources on memory pressure.

 Flag guard for removing usage of the CommitNavigationParams.redirects
 array of URLs in the renderer process.

 Disables sending the Purpose: "prefetch" header for prefetches and
 prerenders.

 Enable using the RenderDocument.

 Controls whether muted media stream audio should continue to render.

 Enables a platform-specific resolution cutoff for prioritizing platform
 decoders over software decoders or vice-versa.

 Note: This feature is used by ChromeOS tests and shouldn't be removed even
 though it has long been enabled by default.

 Restrict the maximum number of concurrent ThreadPool tasks when a renderer is
 low priority.

 Let videos be resumed via remote controls (for example, the notification)
 when in background.

 Allows same-document available-image reuse for no-store images.

 Approach original pre-REC MSE object URL autorevoking behavior, though await
 actual attempt to use the object URL for attachment to perform revocation.
 This will hopefully reduce runtime memory bloat for pages that do not
 explicitly detach their HTMLME+MSE object collections nor explicitly revoke
 the object URLs used to attach HTMLME+MSE. When disabled, revocation only
 occurs when application explicitly revokes the object URL, or upon the
 execution context teardown for the MediaSource object. When enabled,
 revocation occurs upon successful start of attachment of HTMLME to the object
 URL. Note, rather than immediately scheduling a task to revoke upon the URL's
 creation, as at least one other browser does and the original File API
 pattern used to follow, this delay until attachment start enables new
 scenarios that could use the object URL for attaching HTMLME+MSE cross-thread
 (MSE-in-workers), where there could be significant delay between the worker
 thread creation of the object URL and the main thread usage of the object URL
 for starting attachment to HTMLME.

 Run video capture service in the Browser process as opposed to a dedicated
 utility process.

 https://html.spec.whatwg.org/multipage/system-state.html#safelisted-scheme

 Enables unused site permission module in Safety Check.

 Update scheduler settings using resourced on ChromeOS.

 Controls script streaming for http and https scripts.

 Enables script streaming for non-http scripts.

 Enables sending Sec-Purpose: "prefetch" header for
 NoStatePrefetchURLLoaderThrottle.

 Enables sending Sec-Purpose: "prefetch" header for rel="prefetch".

 Browser-side feature flag for Secure Payment Confirmation (SPC) that also
 controls the render side feature state. SPC is not currently available on
 Linux or ChromeOS, as it requires platform authenticator support.

 Used to control whether to remove the restriction that PaymentCredential in
 WebAuthn and secure payment confirmation method in PaymentRequest API must
 use a user verifying platform authenticator. When enabled, this allows using
 such devices as UbiKey on Linux, which can make development easier.

 When enabled, the SubresourceFilter receives calls from the ResourceLoader
 to perform additional checks against any aliases found from DNS CNAME records
 for the requested URL.

 Enables auto preloading for fetch requests before invoking the fetch handler
 in ServiceWorker. The fetch request inside the fetch handler is resolved with
 this preload response. If the fetch handler result is fallback, uses this
 preload request as a fallback network request.

 Unlike navigation preload, this preloading is applied to subresources. Also,
 it doesn't require a developer opt-in.

 crbug.com/1472634 for more details.

 If enabled, UI thread tasks can check ServiceWorker registration information
 from the thread pool without waiting for running the receiving task. Please
 see crbug.com/421530699 for more details.

 crbug.com/40410035: When enabled, download requests ("Save link as",
 "Save image as", <a download>) are intercepted by service workers, allowing
 the service worker's fetch event handler to provide a response.

 Service worker based payment apps as defined by w3c here:
 https://w3c.github.io/webpayments-payment-apps-api/
 TODO(rouslan): Remove this.

 crbug.com/374606637: When this is enabled, race-network-and-fetch-hander will
 prioritize the response processing for the network request over the
 processing for the fetch handler.

 (crbug.com/352578800): Enables building a sysnthetic response by
 ServiceWorker. For navigation requests, the pre-learned static response
 header is returned in parallel with dispatching the network request.

 If enabled, calling setInterval(..., 0) will not clamp to 1ms.
 Tracking bug: https://crbug.com/402694.

 http://tc39.github.io/ecmascript_sharedmem/shmem.html
 This feature is also enabled independently of this flag for cross-origin
 isolated renderers.

 If enabled, an entry point to AtMemory will be shown at the bottom of the
 Autocomplete dialogs.

 Kill switch: if enabled, suggestions are shown for fields with unrecognized
 autocomplete attribute if they are already autofilled.

 When enabled, puts subframe data: URLs in a separate SiteInstance in the same
 SiteInstanceGroup as the initiator.

 Controls whether to isolate sites of documents that specify an eligible
 Cross-Origin-Opener-Policy header.  Note that this is only intended to be
 used on Android, which does not use strict site isolation. See
 https://crbug.com/1018656.

 When enabled, the IPC channel will not be paused when launching non-guest
 renderer processes. This makes it possible for all kinds of mojo calls
 to be sent to the renderer process before OnProcessLaunched fires. When the
 feature is disabled, those messages are instead queued because the IPC
 channel is paused, and only flushed at OnProcessLaunched.

 When enabled, skip pagehide-in-commit when navigating to DSE.
 (See: https://crbug.com/375385416)

 Controls whether SpareRenderProcessHostManager tries to always have a warm
 spare renderer process around for the most recently requested BrowserContext.
 This feature is only consulted in site-per-process mode.

 When enabled, sends the spare renderer information when setting the
 priority of renderers. Currently only Android handles the spare renderer
 information in priority.
 The target priority of a spare renderer in Android is decided by the feature
 parameters in ContentFeatureList.java.

 Enable the Speaker Change Detection feature, which inserts a line break when
 the Speech On-Device API (SODA) detects a speaker change.

 CanPlayThrough issued according to standard.

 Enable service worker warming-up feature. (https://crbug.com/1431792)

 Freeze scheduler task queues in background after allowed grace time.
 "stop" is a legacy name.

 Reduces the work done during renderer initialization.

 Controls whether site isolation should use origins instead of scheme and
 eTLD+1.

 Enables overriding the default subframe process shutdown delay via the
 "delay_seconds" field trial parameter. This allows for experimentation with
 different timeout values for keeping subframe processes alive for potential
 reuse.

 When enabled, "Manage information" menu item for enhanced autofill will
 redirect user either to "/travel" or "/identityDocs" pages instead of
 "/yourSavedInfo" always.

 Disallows window.{alert, prompt, confirm} if triggered inside a subframe that
 is not same origin with the main frame.

 Suspends WebMediaPlayerImpl instances when the containing RenderFrame is
 frozen. TODO(crbug.com/41161335): Remove in M143 after it goes stable.

 Dispatch touch events to "SyntheticGestureController" for events from
 Devtool Protocol Input.dispatchTouchEvent to simulate touch events close to
 real OS events.

 Enable throttling of fetch() requests from service workers in the
 installing state.  The limit of 3 was chosen to match the limit
 in background main frames.  In addition, trials showed that this
 did not cause excessive timeouts and resulted in a net improvement
 in successful install rate on some platforms.

 Throttles Javascript timer wake ups of unimportant frames (cross origin
 frames with small proportion of the page's visible area and no user
 activation) on foreground pages.

 This feature allows touch dragging and a context menu to occur
 simultaneously, with the assumption that the menu is non-modal.  Without this
 feature, a long-press touch gesture can start either a drag or a context-menu
 in Blink, not both (more precisely, a context menu is shown only if a drag
 cannot be started).

 Controls whether the browser should track and reuse free and empty renderer
 processes. When enabled, the browser maintains a list of renderer processes
 that are currently not hosting any frames and are thus eligible for reuse
 when a new renderer process is needed. Currently, only background renderer
 processes are considered for reuse.

 Changes behavior of User-Agent Client Hints to send blank headers when the
 User-Agent string is overridden, instead of disabling the headers altogether.

 Enable the 'unframed' display override for IWAs. go/unframed-explainer-doc.

 Enables the Unified Autoplay policy by overriding the platform's default
 autoplay policy.

 If enabled, the usage of unload handlers causes a blocklisted reason for
 BFCache. The purpose is to capture their source location.

 This feature is for a reverse Origin Trial, enabling SharedArrayBuffer for
 sites as they migrate towards requiring cross-origin isolation for these
 features.
 TODO(bbudge): Remove when the deprecation is complete.
 https://developer.chrome.com/origintrials/#/view_trial/303992974847508481
 https://crbug.com/1144104

 Fix for https://crbug.com/454354290.

 When BeginMainFrame() is throttled, whether input-related BeginMainFrame()s
 are marked urgent, and thus unthtrottled.

 Enabled on Android, since a field trial showed benefits.

 If enabled, URLPattern will use standard defined dummy URL canonicalization
 to canonicalize URL properties. See https://crbug.com/409350827

 Use AndroidOverlay only if required for secure video playback. This requires
 that |kOverlayFullscreenVideo| is true, else it is ignored.

 Use PersistentCache on either side of blink.mojom.CodeCacheHost. This feature
 is dependent on net::HttpCache::IsSplitCacheEnabled() being true. Always use
 IsPersistentCacheForCodeCacheEnabled() rather than querying this feature
 directly.

 If enabled, GetUserMedia API will only work when the concerned tab is in
 focus

 Enable deriving sandboxed frame origins from browser-generated tokens
 instead of renderer-calculated opaque origins.

 Use SequencedTaskRunner for MediaService.

 Use SequencedTaskRunner for MojoVideoEncodeAcceleratorProvider.

 When enabled, the address add/edit editor in the payments request would be
 removed and instead, the address editor from the settings will be used.
 TODO: crbug.com/399071964 - Remove when launched.

 Enabling this will cause parkable strings to use Snappy for compression iff
 kCompressParkableStrings is enabled.

 Feature flag to run the MojoAudioDecoderService in a sequence different than
 the other mojo media services. On some Android devices, MediaCodec may block
 the thread which leads to frequent audio decoder underrun in renderer.
 Running the audio decoder in a separate sequence can improve the performance.
 Note: running audio decoder in a separate thread/sequence will cause
 multithread access to mojo media services. For Android audio decoder, the
 thread safety is easier to guarantee because:
   1. The audio decoder and most of the other mojo media services don't cross
   reference each other.
   2. The only exception is CDM so we use a lock inside MojoCdmServiceContext
   for thread safety.

 Safety switch to allow us to revert to the previous behavior of using the
 restored bounds for PiP windows, rather than the window bounds.  If this
 feature is enabled (the default), then we'll use the window bounds.

 Use the zstd compression algorithm for ParkableString compression.

 Enables future V8 VM features

 Enable VA-API hardware low power encoder for all codecs on intel Gen9x gpu.

 NVIDIA VA-API drivers do not support Chromium and can sometimes cause
 crashes, disable VA-API on NVIDIA GPUs by default. See crbug.com/1492880.
 NVIDIA has committed to helping support hardware acceleration for ARM64
 linux devices, so on those devices we should enable this by default.

 Ensure the advertised minimum supported resolution is larger than or equal to
 a given one (likely QVGA + 1) for certain codecs/modes and platforms, for
 performance reasons. This does not affect JPEG decoding.

 NOTE: This feature is default-enabled, but selectively disabled by tests
 so they can test resolutions below the threshold.  See crbug.com/40650027

 Enables a CHECK in NavigationRequest::ValidateCommitOrigin() to verify
 that the origin used at commit time matches the expected origin stored
 in the FrameNavigationEntry, whenever PageState is non-empty.

 This helps catch session history corruption or stale origin-related state
 being sent to the renderer, which could violate origin isolation and lead
 to security issues (see crbug.com/41492620).

 This feature is disabled by default while we diagnose on Canary only.

 Validates that the EncryptionPattern parameters are within the bounds
 specified by ISO/IEC 23001-7:2016.

 Enables comparing browser and renderer's DidCommitProvisionalLoadParams in
 RenderFrameHostImpl::VerifyThatBrowserAndRendererCalculatedDidCommitParamsMatch.

 Inform video blitter of video color space.

 Controls whether to pre-dispatch more decode tasks when pending decodes is
 smaller than maximum supported decodes as advertiszed by decoder.
 Note: This is controlled on a per-board basis by ChromeOS and must be kept.

 Enables video Picture-in-Picture display smoothness optimization.

 Ensures that the video PiP window title view is properly sized to only fit
 the favicon and origin.

 Forces video Picture-in-Picture windows to be treated as trusted for media
 playback. Used for debugging.

 Server-side kill switch for applying the local VisualViewport transform
 (page scale + visual viewport location) when mapping visual rects into
 viewport space in LayoutView's slow path (ancestor == nullptr). This keeps
 results consistent with the GeometryMapper viewport fast path.

 Controls scope extensions feature in web apps. Enables parsing of "site"
 entries in "scope_extensions" field in web app manifests. See explainer for
 more information:
 https://github.com/WICG/manifest-incubations/blob/gh-pages/scope_extensions-explainer.md

 This controls whether scope extensions work for isolated web apps which
 use same concepts as pwa
 https://github.com/WICG/manifest-incubations/blob/gh-pages/scope_extensions-explainer.md
 Note that for Isolated Web Apps it is not possible to capture link
 navigations without scope extensions.

 Controls parsing and usage of localized fields in web app manifests.
 See spec for more information:
 https://www.w3.org/TR/appmanifest/#x_localized-members

 Controls parsing of the "lock_screen" dictionary field and its "start_url"
 entry in web app manifests.  See explainer for more information:
 https://github.com/WICG/lock-screen/
 Note: the lock screen API and OS integration is separately controlled by
 the content feature kWebLockScreenApi.

 Enables web apps to be migrated from one manifest id to another.

 Enables per PWA System Media Controls. Only supported on Windows and macOS.

 Enable WebAssembly baseline compilation (Liftoff).

 Enables WebAssembly Shared-Everything Threads.

 Enable WebAssembly lazy compilation (JIT on first call).

 Enable WebAssembly Core stack switching.
 https://github.com/WebAssembly/stack-switching

 Enable WebAssembly tiering (Liftoff -> TurboFan).

 Enable WebAssembly trap handler.

 Use deferred pull status update instead of updating the status directly
 on audio thread. See https://crbug.com/40249972.

 Controls whether the Web Bluetooth API is enabled:
 https://webbluetoothcg.github.io/web-bluetooth/

 Controls whether Web Bluetooth should use the new permissions backend. The
 new permissions backend uses ObjectPermissionContextBase, which is used by
 other device APIs, such as WebUSB. When enabled,
 WebBluetoothWatchAdvertisements and WebBluetoothGetDevices blink features are
 also enabled.

 Enables optimizations to flush() and configure() in the WebCodecs' audio and
 video decoder implementations. Kill-switch to be removed after M145 stable.

 A video encoder is allowed to drop a frame in WebCodecs.

 Enables a discard operation on WebContents to free associated resources.
 Eliminates the need to destroy the WebContents object to free its resources.

 Automatically convert light-themed pages to use a Blink-generated dark theme

 The feature is disabled on Android for WebView API issue discussed at
 https://crbug.com/942440.

 Enables the Digital Credential API.

 Enables the Digital Credentials Creation API.

 Enable the web lockscreen API implementation
 (https://github.com/WICG/lock-screen) in Chrome.

 This is intended as a kill switch for the WebOTP Service feature. To enable
 this feature, the experimental web platform features flag should be set.

 Controls which backend is used to retrieve OTP on Android. When disabled
 we use User Consent API.

 The JavaScript API for payments on the web.

 Enables HW decode acceleration for WebRTC.

 Enables HW encode acceleration for WebRTC.

 Kill switch for crbug.com/407785197.

 Inform webrtc with correct video color space information whenever
 possible.

 A hardware video encoder is allowed to drop a frame in WebRTC.

 Causes WebRTC to replace host ICE candidate IP addresses with generated
 names ending in ".local" and resolve them using mDNS.
 http://crbug.com/878465

 Causes WebRTC to not set the color space of video frames on the receive side
 in case it's unspecified. Otherwise we will guess that the color space is
 BT709. http://crbug.com/1129243

 Used to set a few tunable parameters for the WebRTC Media Capabilities
 implementation.

 Instructs WebRTC to honor the Min/Max Video Encode Accelerator dimensions.

 Enables build-time generated resource-bundled code caches for WebUI pages.
 See crbug.com/375509504 for details.

 Enables code caching for scripts used on WebUI pages.

 If enabled, WebUI will optimize resources loading by piping a dictionary of
 URL paths to materialized WebUI resource content to the renderer via
 LocalResourceLoaderConfig.
 This is an extension of kWebUIInProcessResourceLoading which previously
 serves only resources in resource bundle.
 See crbug.com/459528908.

 Reports WebUI Javascript errors to the crash server on all desktop platforms.
 Previously, this was only supported on ChromeOS and Linux.
 Intentionally enabled by default and will be used as a kill switch in case
 of regressions.

 Controls whether the WebUSB API is enabled:
 https://wicg.github.io/webusb

 Kill switch for https://crbug.com/338955051.

 Enables small accelerated canvases for webview (crbug.com/1004304)

 Trial to disable synchronous draw for synchronous compositor (ie Android
 WebView).

 Apply PrefetchPriority::kHighest for Webview Prefetch API.

 Controls whether the WebXR Device API is enabled.

 Controls the persistent license support for protected media that uses
 widevine.

 WorkerThread termination respects the current thread termination request.

 Indicates that renderer is running on an Android XR (AR/VR) device.
 Enables certain features which are not needed on other platforms.

 When enabled, updates the "Autofill and passwords" (or "Passwords and
 autofill") labels and icons to "Your saved info".

 Defines if the "Your Saved Info" page is eligible to be shown in Chrome
 settings.

 Defines if the shipping and order data is included in the "Your Saved Info"
 settings page.

 This flag changes about:blank to dark in dark mode on user action.

 If the author did not define aria-actions, surface button and link
 children inside option and menuitem elements as implicit actions.

 Use a minimum role of group on elements that are keyboard-focusable.
 See https://w3c.github.io/html-aam/#minimum-role.

 Enforce no accessible name on objects that have a role where names are
 prohibited (listed in https://w3c.github.io/aria/#namefromprohibited):
 log a friendly error in the developer console, and trigger a DCHECK().
 The incorrect markup situation will be repaired, and the name will
 be exposed as a description instead.
 TODO(crbug.com/350528330,
 https://github.com/web-platform-tests/interop-accessibility/issues/133,
 https://github.com/w3c/accname/issues/240,
 https://github.com/w3c/accname/issues/241): If community feedback is
 positive, and WPT + accname testable statements are updated to allow
 this, then add status: test.

 https://chromestatus.com/feature/5113389252739072
 https://issues.chromium.org/issues/41119923

 Interest Group JS API/runtimeflag.

 Fix for crbug.com/403358869

 Adjust the end of the next paragraph if the end position for the
 paragraph is updated while moving the paragraph. See
 https://crbug.com/329121649

 Strip actionability from content that is positioned offscreen
 via position:fixed and cannot be reached by scrolling.

 Strip actionability from content that is positioned offscreen via
 absolute/relative/static positioning and cannot be reached by scrolling.

 Whether to automatically build an APC content_extraction tree on load.

 Whether to enforce geometry invariants in AIPageContentAgent.
 Only supported for DCHECK-enabled builds.

 Ensures that text content extracted from DOM nodes are valid UTF-8 Before
 providing them to consumers of AIPageContent.

 When enabled, redact elements with --webkit-text-security.

 Use MapToVisualRectInAncestorSpace for outer bounding boxes, for
 math consistent with visual bounding boxes.

 When enabled, iframe element coordinates will be tracked using the
 Element::SetTrackedElementSubRect() method.

 When enabled, native or heuristics password element coordinates will be
 tracked using the Element::SetTrackedElementSubRect() method.

 Clamp AIPageContent visible bounding boxes to the local-root viewport
 after visual-viewport mapping to normalize viewport-relative geometry.

 Extension access to "AIPromptAPI".

 Gates access to legacy aliases of renamed "AIPromptAPI" identifiers.
 TODO(crbug.com/498228550): Remove after extension context usage drops.

 Gates access to legacy sampling parameter surfaces for "AIPromptAPI".
 Enabled in extension contexts, and for API enhancement experiments.

 Gates access to inference parameter enhancements for "AIPromptAPI".
 This feature alone does not expose any "AIPromptAPI" feature access.

 Gates access to the responseConstraint enhancement for "AIPromptAPI".
 This feature alone does not expose any "AIPromptAPI" feature access.

 Gates access to the tool use (function calling) enhancement for
 "AIPromptAPI". This feature alone does not expose any "AIPromptAPI"
 feature access.

 https://crbug.com/40681200

 Instead of creating a new DOMStringList on every access to
 location.ancestorOrigins, return the ancestor origins list
 stored on Document.
 This was added in M147 and can be removed after M149.
 https://issues.chromium.org/issues/483610021

 This is a bug fix for rendering a missing focus ring on <a> elements.
 Shipping in M147, safe to remove in M150.

 Kill switch for https://crbug.com/415834974 which changes anchor
 positioning adjustments to occur even in cases where there is no
 scrollable overflow.

 https://chromestatus.com/feature/5083257285378048

 https://drafts.csswg.org/web-animations-2/#triggers

 appearance:base for in-page form controls.
 https://drafts.csswg.org/css-forms-1/
 https://issues.chromium.org/issues/450139531
 https://chromestatus.com/feature/5104958101913600

 Gates the returned accuracyMode parameter upon permissions.query({name: "geolocation"})

 Gates the new permission "geolocation-approximate".

 The transition to "running" after construction happens asynchronously.
 Same for the transition to "suspended" after suspend() is called.
 https://webaudio.github.io/web-audio-api/#AudioContext-constructors

 AudioContext.playbackStats interface.

 AudioContext.playoutStats interface.
 https://chromestatus.com/feature/5172818344148992

 https://drafts.csswg.org/css-scroll-snap

 When enabled, the dark mode filter (Auto Dark / force-dark) skips
 applying dark mode to images entirely; all images are kept untouched
 as if they are in light mode.
 P.N. AutoDarkMode needs to be applied separately.

 Fix for https://crbug.com/471876082

 If the start and end positions are the same in MoveParagraph,
 there is no need to collapse the whitespace between them.
 https://crbug.com/406053617

 When enabled, enforces new interoperable semantics for 3D transforms.
 See crbug.com/1008483.

 A developer opt-out for background page freezing.

 Removes special layout code from customizable select which was
 preventing it from growing in the inline direction.

 closest-corner/farthest-corner in circle()/ellipse().
 crbug.com/361617757

 Whether MapToVisualRectInAncestorSpace() with a null ancestor can
 use the geometry mapper fast path.

 https://chromestatus.com/feature/4830298126417920

 Prevents the popup document for the select element from being opened
 if the corresponding OS window is not focused. Enabled in M147, can be
 removed in M150.

 https://crbug.com/415304289: Mouse and Pointer boundary event dispatch
 (i.e. dispatch of enter, leave, over, out events) tracks DOM node removal
 to fix event pairing on ancestor nodes.

 Bypasses the enforcement of the Page Embedded Permission Control
 security checks. This flag is disabled by default and should only be
 enabled in automated tests in order to allow them to avoid needing to
 wait until the PEPC is validated and also to use JS-initiated clicks.

 Enables RFC 7234-compliant Cache-Control header parsing, removing RFC
 2616 separators that are not valid in RFC 7234.
 https://crbug.com/42050325

 Enables metrics collection comparing RFC 7234 vs RFC 2616 Cache-Control
 parsing. Performs double parsing on every Cache-Control header to
 measure behavioral differences. Can be disabled as a kill switch if
 performance issues arise.
 https://crbug.com/42050325

 For emergency flag flips in case we discover bad bugs.

 https://github.com/WICG/html-in-canvas/blob/main/README.md
 Note the API name has changed to drawElementImage.

 Canvas2D API for specifying HDR headroom for drawing operations.
 https:/crbug.com/428575083, https://github.com/whatwg/html/issues/11165

 https://crbug.com/394052224

 https://crbug.com/479240778

 Canvas2D API for specifying HDR tone mapping behavior.
 https:/crbug.com/448552449, https://github.com/whatwg/html/issues/11424

 Kill switch for https://crbug.com/330506337.

 TODO(crbug.com/1444712): Before enabling that flag by default,
 make sure MouseCursorOverlayController does not transmit mouse
 events to a CaptureController that don't have any
 capturedmousechange listener attached to it.
 See https://github.com/screen-share/mouse-events/issues/14

 Changes the caret's affinity to upstream, preventing spaces
 from appearing in the previous line when typing at the start
 of a wrapped line. See https://crbug.com/40677155

 Kill switch for changes to RenderFrameMetadataObserverImpl in connection with Engagement
 Signals. See https://crrev.com/c/4544201 and https://crbug.com/1458640.

 If focus is not at canonical position then spellcheck should be deactivated.
 crbug.com/396485529

 Clamps word boundary detection to the contenteditable scope when
 adjacent contenteditable spans have no whitespace between them.
 See https://crbug.com/40848794.

 Set currentTarget to null after dispatch for EventTarget.
 This was added in M142 and can be removed after M144.
 https://issues.chromium.org/issues/346766786

 Fixes a bug where ancestor elements retain a stale :focus-within
 state if the focused element's subtree is removed during blur
 or focusout events.
 This was added in M147 and can be removed after M149.
 https://issues.chromium.org/issues/454668198
 https://issues.chromium.org/issues/457465869

 Determine clearing of target and relatedTarget by checking
 if the top node is in shadow tree.
 This was added in M142 and can be removed after M144.
 https://issues.chromium.org/issues/373655918
 https://issues.chromium.org/issues/40253359

 If the link has tabindex, the status bubble should not persist after
 mouse out.
 This was added in M146 and can be removed after M148.

 This ensures that clipboard event fires on a target node which is
 focused in case no visible selection is present.
 crbug.com/40735783

 Uses ComputeContainerNode() instead of AnchorNode() for clipboard event
 targeting so that kBeforeAnchor/kAfterAnchor selections correctly target
 the containing parent element rather than the element itself.
 See https://crbug.com/40684204

 Support ClipboardItemData of Promise<DOMString> type according to spec
 https://w3c.github.io/clipboard-apis/#typedefdef-clipboarditemdata

 TODO(crbug.com/440374239): Disabled due to https://crbug.com/440374239.

 Avoid queuing a task to fire a selectionchange event when there is already a task scheduled
 to do that for the target according to the new spec:
 https://w3c.github.io/selection-api/#scheduling-selectionhange-event

 Allows <input type=color> to accept any valid CSS color value
 (named colors, rgb(), hsl(), system colors, etc.) in addition to
 the legacy 7-character hex format (#rrggbb).
 https://crbug.com/40226268
 This was added in M146 and can be removed after M148.

 Enable the display-p3-linear color space in CSS.
 https://chromestatus.com/feature/5162372125818880

 Enable the srgb-linear and display-p3-linear color spaces in
 PredefinedColorSpace.
 https://chromestatus.com/feature/5122501071994880

 Enable the rec2100-linear color space in CSS and PredefinedColorSpace.
 https://chromestatus.com/feature/5204024772788224

 @container allowing multiple comma separated container queries.
 Also introduces the 'conditions' attribute on CSSContainerRule.

 Return the current target from composedPath() while
 dispatching.
 This was added in M142 and can be removed after M144.
 https://issues.chromium.org/issues/444932649
 https://issues.chromium.org/issues/346766786

 When enabled, TimelineTriggers[1] will function via cc::TimelineTrigger
 objects that live on the compositor thread.
 [1] https://drafts.csswg.org/css-animations-2/#timeline-triggers

 When enabled, providing developers control over the resources loaded
 into their pages' contexts and the endpoints to which their pages can
 make requests.
 Note: To enable this feature, developers MUST include the origin trial
 token within the HTTP headers. Including the origin trial token via the
 <meta> tag in the head of any page does NOT enable the feature.
 See https://wicg.github.io/connection-allowlists/.

 Fix for https://crbug.com/40659076. When enabled, queryCommandState for
 'subscript' or 'superscript' with a caret selection will consider
 ancestor <sub> or <sup> elements, matching the behavior for range
 selections.

 Enable support for Controlled Frame, providing the Controlled
 Frame tag to IWA apps and other contexts. See
 https://github.com/WICG/controlled-frame/blob/main/README.md for more
 info.

 Enable support for requesting SecurityInfo in WebRequest API
 for controlled frames. See
 https://wicg.github.io/controlled-frame/#dictdef-securityinfo for more
 info.

 Enables setting the maxAge option when creating a cookie in the
 Cookie Store API.

 Feature flag for stripping \t and space from Cookie names and values.
 https://crbug.com/437345480

 Corrects the handling of <form> elements nested within <template> tags
 in HTML parsing. See https://crbug.com/352896478 for details.

 CPU Performance API, work in progress.
 https://chromestatus.com/feature/5189864286978048
 https://github.com/explainers-by-googlers/cpu-performance

 When enabled, allowlisting script urls and scripts used in eval via
 hashes will be supported in script-src. This is a no-op if the
 network::features::kCSPScriptSrcHashesInV1 flag is off, since it
 controls parsing in the network service.
 See crbug.com/392657736 for details.

 The AccentColor And AccentColorText CSS system color keywords

 Maps deprecated ActiveCaption to Canvas instead of CanvasText.
 https://drafts.csswg.org/css-color-4/#deprecated-system-colors
 https://crbug.com/41493724

 https://drafts.csswg.org/css-color-5/#relative-alpha
 https://chromestatus.com/feature/5070160203481088

 Allows using counter() and counters() in alt text (after / in content property).

 Let transforms affect anchor() and anchor-size() functions.

 https://drafts.csswg.org/web-animations-2/#iteration-composite-operation

 https://drafts.csswg.org/css-values-5/#early-resolution

 Whether <image> values are allowed as counter style <symbol>

 https://drafts.csswg.org/css-counter-styles/#counter-style-speak-as

 https://chromestatus.com/feature/5459864205393920
 https://chromestatus.com/feature/5125388091260928

 Support CSS Values Level 4 calc simplification and serialization
 as specified in the specs below.
 https://drafts.csswg.org/css-values-4/#calc-simplification
 https://drafts.csswg.org/css-values-4/#calc-serialize

 https://chromestatus.com/feature/5082469066604544

 Two-value caret-color: <color> [<color>]?
 https://github.com/w3c/csswg-drafts/issues/13723

 https://chromestatus.com/feature/6106160780017664

 Support case-sensitive attribute selector modifier
 https://drafts.csswg.org/selectors-4/#attribute-case

 In the cases where it is impossible or impractical to determine the
 measure of the “0” glyph, it must be assumed to be 0.5em wide by 1em
 tall. Thus, the ch unit falls back to 0.5em in the general case, and to
 1em when it would be typeset upright (i.e. writing-mode is vertical-rl or
 vertical-lr and text-orientation is upright).
 https://drafts.csswg.org/css-values-4/#ch
 See crbug.com/416145497 for more details.

 https://drafts.csswg.org/css-values-5/#progress
 container-progress()

 https://drafts.csswg.org/css-conditional-5/#typedef-style-range

 https://drafts.csswg.org/css-color-5/#contrast-color

 https://drafts.csswg.org/css-borders-4/#corner-shaping

 https://drafts.csswg.org/css-lists-3/#counter-reset
 https://crbug.com/40760770

 Unprefixed cross-fade() (in addition to the existing -webkit-cross-fade()).
 https://drafts.csswg.org/css-images-4/#cross-fade-function

 Include custom properties in CSSComputedStyleDeclaration::item/length.
 https://crbug.com/949807

 crbug.com/483689942
 Serialize font-family names as space-separated idents when possible,
 per CSSWG resolution. See https://github.com/w3c/csswg-drafts/issues/5846.

 https://drafts.csswg.org/css-mixins-1/#function-rule

 https://chromestatus.com/feature/5157805733183488

 https://chromestatus.com/feature/5157805733183488

 This needs to be kept as a runtime flag as long as we need to forcibly
 disable it for WebView on Android versions older than P. See
 https://crrev.com/f311a84728272e30979432e8474089b3db3c67df

 https://drafts.csswg.org/css-values-5/#ident

 https://chromestatus.com/feature/5078177326170112

 image(<color>) functional notation, producing a solid-color image
 with no natural dimensions.
 https://drafts.csswg.org/css-images-4/#funcdef-image
 https://chromestatus.com/feature/5121011285622784

 The inherit() function works like var(), except that it grabs
 the computed value of the specified property from the parent style
 instead of the current style.

 https://drafts.csswg.org/css-values-5/#inherit-notation

 https://chromestatus.com/feature/6289894144212992

 Support for extended language ranges in :lang()
 https://chromestatus.com/feature/5071058079055872

 light-dark() for image values (background-image, etc.)
 https://drafts.csswg.org/css-color-5/#light-dark

 Implements counter-increment and counter-set for the non-<li>
 elements and the reversed ordered lists.

 https://crbug.com/40682542

 Allows pseudo-element selectors within logical combination pseudo-
 classes, e.g. :is(div::before).

 https://crbug.com/444386484

 Pseudo-classes :playing, :paused, :seeking, :buffering, :stalled,
 :muted, and :volume-locked for media elements.
 https://drafts.csswg.org/selectors/#resource-pseudos

 https://drafts.csswg.org/css-values-5/#progress
 media-progress()

 https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle

 Ignore the stylesheet encoding when parsing URLs, always using UTF-8.
 See crbug.com/1485525.

 Support polygon(round <length>, ...) per CSS Shapes Level 1.
 Spec: https://www.w3.org/TR/css-shapes-1/#typedef-basic-shape
 Issue: https://crbug.com/329302249

 https://drafts.csswg.org/css-values-5/#progress
 progress()

 For ::column pseudo-element for fragment styling.
 https://github.com/flackr/carousel/blob/main/fragmentation/README.md

 Enables the :has-slotted pseudo-selector.
 https://chromestatus.com/feature/5134941143433216

 For ::scroll-up-button and ::scroll-down-button pseudo-elements for Carousel.
 https://github.com/flackr/carousel/tree/main/scroll-button

 For ::scroll-marker and ::scroll-marker-group pseudo-elements for Carousel.
 https://github.com/flackr/carousel/tree/main/scroll-marker

 Non-standard 'auto' keyword for the CSS resize property. Used for
 selectively enable resize corner for textarea via UA stylesheet, but
 unintentionally exposed to author sheets. UA rule is now using
 -internal-textarea-auto instead.

 Kill switch for integrity() enforcement on CSS image and SVG
 document resources. See also: CSSURLRequestModifiers

 The '&' pseudo-class effectively behaves like :where(:scope)
 when used in @scope rules.

 The "@import scope(...)" syntax.
 https://github.com/w3c/csswg-drafts/issues/7348

 https://drafts.csswg.org/css-conditional-5/#scrolled

 https://drafts.csswg.org/css-scroll-snap-2#scroll-initial-target

 https://github.com/w3c/csswg-drafts/issues/12122

 https://drafts.csswg.org/css-overflow-5/#active-before-after-scroll-markers
 :target-before and :target-after pseudo classes for scroll markers.

 https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchange

 https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchanging

 https://drafts.csswg.org/css-scroll-snap-2/#snapevent-interface

 https://drafts.csswg.org/css-scroll-snap-2/#snap-events

 scroll-target-group property
 https://drafts.csswg.org/css-overflow-5/#scroll-target-group

 scroll-target-group property sets aria-current=true on :target-current html scroll marker.

 path() and shape() basic shapes for shape-outside.
 https://drafts.csswg.org/css-shapes-1/#basic-shape-functions
 https://drafts.csswg.org/css-shapes/#shape-outside-property
 ChromeStatus: https://chromestatus.com/feature/5080980370096128

 rect() and xywh() basic shapes for shape-outside.
 https://drafts.csswg.org/css-shapes-1/#basic-shape-functions
 https://drafts.csswg.org/css-shapes/#shape-outside-property
 ChromeStatus: https://chromestatus.com/feature/6323071520735232

 https://drafts.csswg.org/cssom-1/#dom-cssstylesheetinit-baseurl

 https://chromestatus.com/feature/5153932394102784

 Allows the CSS "accent-color" property to support the system accent color as the default option.

 https://issues.chromium.org/40787216: CSS text-align: match-parent value

 https://issues.chromium.org/40675832: CSS text-decoration-skip-ink: all value

 crbug.com/417306102

 crbug.com/417306102

 crbug.com/434361099

 crbug.com/1463890, crbug.com/1463891: CSS text-spacing shorthand

 https://crbug.com/40928177: Support of text-transform: full-size-kana

 https://issues.chromium.org/41297237: CSS text-transform: full-width value

 crbug.com/41297237: Support multi-keyword values in CSS text-transform.

 Support for the 'all' keyword of the 'timeline-scope' property.

 https://drafts.csswg.org/scroll-animations-1/#timeline-scope

 Makes timeline names global by default.

 https://github.com/w3c/csswg-drafts/issues/12581

 CSS URL request modifiers: cross-origin(), integrity(),
 referrer-policy() inside url() functions.

 https://drafts.csswg.org/css-values-5/#request-url-modifiers

 Support for user-select:contain.

 https://crbug.com/488305665: Support :user-valid/:user-invalid for radio buttons.
 This lands in M147, and the flag can be removed in M149.

 https://drafts.csswg.org/selectors-4/#user-valid-pseudo

 https://chromestatus.com/feature/4850737974345728

 CSSWG resolution to make the zoom property continuously
 interpolatable. https://github.com/w3c/csswg-drafts/issues/10872
 ChromeStatus: https://chromestatus.com/feature/5183671737909248

 Shipping in M148 (or backported earlier), can be removed in M150.

 appearance:base for the <datalist> element when it is invoked as a
 picker from an <input type=text>.
 https://issues.chromium.org/issues/453705243
 https://chromestatus.com/feature/5067156794507264

 appearance:base-select for <select multiple size=1> with a picker.

 see crbug.com/341313078

 https://chromestatus.com/feature/5134293578285056

 https://crbug.com/473454959

 https://crbug.com/448174611

 https://crbug.com/448174611

 https://chromestatus.com/feature/5133099851317248

 https://chromestatus.com/feature/5133099851317248

 Killswitch for https://crbug.com/400317114 fix.
 This lands in M142, and the flag can be removed in M144.

 Delete text from descendant text nodes before removing children of
 a root editable element to ensure selectionchange event fires.

 This allows pages to opt out of the unload deprecation. Enabling this
 allows unload event handers to be used in the frame regardless of any
 Permissions-Policy setting.
 https://crbug.com/1432116

 This feature makes the <dialog> element close properly when its "open"
 attribute is removed. https://github.com/whatwg/html/issues/5802 and
 https://github.com/whatwg/html/pull/10124.

 Experimental support for the Direct Sockets API in Service Workers.
 https://github.com/WICG/direct-sockets

 Experimental support for the Direct Sockets API in Shared Workers.
 https://github.com/WICG/direct-sockets

 Switch from ellipsis to clip when a container is scrolled.
 This shipped in M146 and the flag can be removed in M148.

 Disables removeFormat command on Plaintext-only content editable div

 Disconnected <area> elements should not trigger navigation.
 This was added in M146, and can be removed in M148.

 For readonly inputs, do not allow access to the picker.
 This landed in M146 and can be removed in M148.

 kHidden and kHiddenButPainting visibility states are treated as
 hidden in the sense of document.visibilityState.  However, they are
 handled differently internally.  For example, video playback should
 continue in kHiddenButPainting, such as when the page is being
 background captured.  When enabled, this feature causes blink to
 notify internal observers about visibility changes between the two
 hidden states, in addition to transitions to/from kVisible.

 Since the two hidden states are exposed to the web identically, there
 is no visibilitychanged event fired when switching between them.

 When this feature is disabled, blink reverts to its original behavior
 of eliding transitions between the two hidden states, including to
 internal observers.  This behavior causes problems with capture and
 picture-in-picture, but is preserved as a safe fallback.

 Dispatch selectionchange event per element according to the new spec:
 https://w3c.github.io/selection-api/#selectionchange-event

 Allowing elements with display:contents to have focus.
 See https://crbug.com/1366037

 https://chromestatus.com/feature/5067126381215744

 Enables DocumentIsolationPolicy.
 See https://https://github.com/WICG/document-isolation-policy.

 Fix iframe unload events not firing during document.open()
 https://crbug.com/40947017
 Lands in M144; remove this flag in M146 after the milestone rolls.

 https://chromestatus.com/feature/5111042975465472
 <template patchfor> etc.

 Enables preferInitialWindowPlacement Document PiP option to skip
 re-using the previous pip window bounds.

 Enables propagating user activation from a document picture-in-picture
 window up to its opener window and vice versa.

 Enables the ability to use Document Policy header to control feature
 DocumentDomain.

 Enables the ability to use Document Policy header to control feature
 ExpectNoLinkedResources.

 Enables the ability to use Document Policy header to control feature
 IncludeJSCallStacksInCrashReports. https://chromestatus.com/feature/4731248572628992

 Enables Document Policy for DedicatedWorkers.

 Enables the ability to use Document Policy header to control feature
 NetworkEfficiencyGuardrails. https://chromestatus.com/feature/5156240166223872

 Enables the ability to use Document Policy header to control feature
 SyncXHR.

 DOMActivate event inherits bubbles from the underlying event to
 prevent activation behavior of parent elements when it doesn't bubble.
 crbug.com/41431966

 When enabled, retarget the relatedTarget attribute of drag events.
 This landed partly in M146 and more in M150 and can be removed in M152.

 Enables JS-constructed File objects (e.g. new File([bytes], 'photo.jpg'))
 to carry their blob contents through the drag-and-drop pipeline.
 When disabled, only the filename is sent as text/plain (legacy behavior).

 See https://crbug.com/443612843

 See https://crbug.com/379170477

 Uses the original event delta to choose the initial elastic overscroll
 axis.

 ElementInternals.behaviors allows web authors to attach
 platform-provided behaviors to custom elements, enabling
 them to adopt native behaviors without extending native
 elements.
 crbug.com/486928684
 https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/PlatformProvidedBehaviors/explainer.md

 When enabled, the readonly attribute will prevent constraint validation
 only in some cases, depending on the element.
 This was added in M147 and can be removed after M149.
 https://issues.chromium.org/issues/486228104

 crbug.com/420857717

 See: crbug.com/40771555

 When enabled, the LCP algorithm ignores image entropy for the first
 video frame. See crbug.com/434659232.

 event.pseudoTarget property to represent pseudo-elements in events. Returns CSSPseudoElement or null.

 Kill-switch for https://chromestatus.com/feature/5153386492198912
 Added in M144, can be removed in M146.

 https://drafts.csswg.org/web-animations-2/#triggers

 Kill-switch for crbug.com/40434449.
 Added in M139, and it can be removed in M141.

 Allows fenced frames to access unpartioned data via Shared Storage in
 exchange for disabling untrusted network access. This is the Blink
 counterpart of the base::Feature with the same name. Because local
 unpartitioned data access requires browser and renderer process
 coordination, the value of this flag is strictly controlled by the
 base::Feature variant, and setting this flag does nothing.

 Add Request.bytes() and Response.bytes()
 https://chromestatus.com/feature/5239268180754432

 The Blink runtime-enabled feature name for the API's IDL.
 https://chromestatus.com/feature/4654499737632768

 The retry ability for Fetch keepalive requests.
 https://chromestatus.com/feature/5181984581877760

 Also enabled when blink::features::kFileHandlingAPI is overridden
 on the command line (or via chrome://flags).

 Shared objects by OPFS and non-OPFS File System Access API.

 In-development features for the File System Access API.

 The FileSystemHandle.getCloudIdentifiers() method (see
 crbug.com/1443354).

 Non-OPFS File System Access API.

 OPFS File System Access API.

 When enabled, calling remove() on a FileSystemAccessHandle will also
 update the permission grants for the associated path. Restored after
 next write to the path.
 See crbug.com/421690393.

 Controls the internal write-only mode for various FileSystemAccess API.
 This covers mostly content layer and does not expose any write mode to
 user visible APIs.
 This flag is part of crbug.com/421690393 and crbug.com/328458680.

 The FileSystemObserver interface for the File System Access API.
 See https://crbug.com/1019297.

 The unobserve function of the FileSystemObserver.
 See https://crbug.com/321980469.

 Adds the filter attribute to the input element, which targets a
 listbox select element to perform filtering.

 Fix for https://crbug.com/41153707

 Enables the beforefilter event and the option.filtered IDL, which are
 shared primitives needed by both the FilterableSelect and
 CustomizableCombobox features.

 When enabled, HTMLFormControlElement::IsReadOnly() returns false for
 types that don't support readonly.

 Returns alignment value instead of a boolean

 Fix a bug in the <map> element's caching of the name attribute. This
 flag was added in M148, and can be removed in M150.

 This fixes the suppression of markers for <details> and
 list items for appearance:auto.
 This was added in M146 and can be removed after M148.
 Note that as-is, this flag triggers crbug.com/408002786.

 crbug.com/411739501

 Guard the kStart / kEnd / kStartAndEnd branches of
 LayoutSelection::ComputeSelectionStatus against std::nullopt
 start_offset / end_offset in SelectionPaintRange.
 See https://crbug.com/489028874

 Fix for strikethrough toggle not working in empty
 contenteditable. See https://crbug.com/427915243

 Fix LayoutView viewport mapping in the GeometryMapper fast path for
 OOPIFs.

 Enables deal support within auctions.

 Enables using a 'deprecatedRenderURLReplacements' field within the
 Protected Audience ad auction config.

 Feature flag to control removal, in case we run into unexpected
 breakage.

 TODO(crbug.com/384481095): Remove in a few milestones, along with the
 implementation code.

 Enables the private model training API in Protected Audience.
 https://github.com/WICG/turtledove/blob/main/PA_private_model_training.md

 Enables real time reporting API in Protected Audience.
 https://github.com/WICG/turtledove/blob/main/PA_real_time_monitoring.md

 Enables the ability to set seller nonces on the header response and
 use bidNonce in bids.

 Enables having executionMode in the auctionConfig to use for seller scripts.

 https://open-ui.org/components/scoped-focusgroup.explainer/

 2-D grid navigation functionality of focusgroup is considered out of
 scope for the initial implementation.
 crbug.com/445992558

 crbug.com/40398871

 crbug.com/41170551

 crbug.com/393391746

 crbug.com/40398871

 TODO(crbug.com/1231644): This flag is being kept (even though the
 feature has shipped) until there are settings to allow users to
 customize the feature.

 https://github.com/flackr/reduce-motion/blob/main/explainer.md

 Generate layout fragments for out-of-flow positioned elements as
 children of their actual containing block - ALSO when inside block
 fragmentation, such as multicol. See crbug.com/40267498

 Tracking bug for the implementation: https://crbug.com/430204832

 A feature flag that controls whether the geometry mapper singular
 transform fix is enabled.
 https://issues.chromium.org/issues/441128445

 GeometryUtils mixin.
 https://drafts.csswg.org/cssom-view/#the-geometryutils-interface

 GeometryUtils for CSSPseudoElement interface.
 https://www.w3.org/TR/cssom-view-1/#the-geometryutils-interface

 When a Web application calls getDisplayMedia() and asks for audio,
 allow a hint to be provided as to whether the Web application is
 interested in audio being among the options offered to the user
 on window display surfaces.

 https://www.w3.org/TR/screen-capture/#dom-displaymediastreamoptions-windowaudio

 To filter only elements in the HTML namespace when calling
 getElementsByName().
 This was added in M141 and can be removed after M143.
 https://issues.chromium.org/issues/40502558

 Enables Skipping children for invisible select elements containing
 non-editable node while calculating end of paragraph.

 Killswitch for https://crbug.com/441547032.

 TODO(crbug.com/333628468): Enables the headingoffset and
 headingreset attributes, which allow for alternate styles of building
 structured headings. This is being actively prototyped, starting ~M136.
 For more see https://github.com/whatwg/html/issues/5033

 Kill switch for setting display: none on the media controls
 container when it is not needed.
 Lands in M147 and can be removed in M149. https://crbug.com/40591804

 Fixed https://crbug.com/456164629, so this will be shipped in M150
 and can be removed in M152.

 Use container_transform_state instead of local_transform_state when
 computing z-depth for depth ordering in preserve-3d hit testing.
 Fixes incorrect hit-test results for layers without CSS transforms.
 https://crbug.com/464173566

 Extra steps in HTML Agency Adoption algorithm to remove elements from the
 formatting list when the internal loop reached the maximum number of
 iterations. This shipped in M148 and the flag can be removed in M150.

 Additional default command/commandfor actions that aren't part of v1 of
 commands. When this flag is disabled only v1 actions (popover and dialog
 defaults) will work.

 Remove support for the <command> element from the HTML parsing logic.
 This shipped in M148 and the flag can be removed in M150.
 https://issues.chromium.org/issues/491158089
 NOTE: when this flag is removed, be sure to also remove "command"
 from third_party/blink/renderer/core/html/html_tag_names.json5.

 Adds support for scroll commands such as 'page-up' and 'page-block-end'.
 https://github.com/danielsakhapov/declarative-scroll-commands-for-html-explainer

 Return a natural width/height of zero from
 HTMLImageElement.naturalWidth/Height for SVG images that don't have a
 natural width/height set.

 Remove support for ::-webkit-clear-button.
 This shipped in M149 and the flag can be removed in M151.,
 NOTE: when this flag is removed, be sure to also remove "clear"
 from third_party/blink/renderer/core/html/shadow/shadow_element_names.json5.

 Adds support for the ::interest-button pseudo element, which is a sub-
 feature of the interest invokers feature.
 https://open-ui.org/components/interest-invokers.explainer/

 Prevents the HTMLLinkElement processing model from being invoked when
 attributes are processed but their value doesn't change. See
 https://crbug.com/41436016.

 A flag, just for local testing to make the
 HTML parser yield more often and take longer to resume.
 This helps when debugging flaky tests caused by parser
 yielding heuristics.

 When enabled, specifies visual affordances for printing such as headers,
 footers and page numbers, to be PDF annotations.
 See section 14.8.2.2.1 here for info:
 https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf

 Parse processing instructions in HTML.

 Srcset images respond to viewport/zoom changes by
 re-selecting the best candidate, including for
 x-descriptors.
 https://crbug.com/41385706

 If a painting bug no longer reproduces with this feature enabled, then
 the bug is caused by incorrect cull rects.

 See crbug.com/40695399

 If enabled, and the inner html parser is unable to successfully
 parse, it will log histograms of why it failed. The logging is
 non-trivial.

 Enable DataTransfer propagation to input events for insertFromPaste,
 insertFromDrop, and insertReplacementText operations on content-editables.

 When enabled, deletion commands like Ctrl+Backspace (deleteWordBackward)
 with selected text will correctly report deleteContentBackward instead of
 deleteWordBackward in both beforeinput and input events, conforming to
 the W3C Input Events spec.

 The HTML parser inserts a </select> end tag before inserting <input>
 when parsing inside of a <select> tag. We want to allow <input> inside
 <select>, but it isn't web compatible enough. This flag allows <input>
 inside <select> but only if there is another open tag in between the
 <input> and the <select>, like <select><div><input>.
 For now, this flag also makes <input> close <select> like it used to
 when the <input> is put directly within an <option> or <optgroup>.

 Insert a blockquote before a outer block after creating the blockquote
 when indenting a node whose outer block is a blockquote. See
 https://crbug.com/327665597

 https://chromestatus.com/feature/5152834368700416

 Fixes a bug in the implementation of interest and loseinterest
 events - they should not be composed events.
 This shipped in M149 and can be removed in M151.

 If enabled, BeginMainFrame will always be requested when there are
 active IntersectionObservers and also active composited animations.

 Adds encryptionScheme field based on
 https://www.w3.org/TR/media-capabilities/#keysystemtrackconfiguration.
 See https://crbug.com/498284510 for more details.

 Checks interactive content using EventPath captured at
 dispatch start instead of current DOM state. This was
 added in M145 and can be removed after M147.
 https://issues.chromium.org/issues/452084024

 The following LayoutBox functions are implemented using information
 from physical fragments, rather than computed style, and containing
 block walking (was needed for percentage padding):
   ClientLeft(), ClientTop(), ClientWidth(), ClientHeight(),
   ContentLeft(), ContentTop(), ContentWidth(), ContentHeight().

 When enabled, brings chromium into compliance with the resolution of:
   https://github.com/whatwg/html/issues/10671
 This flag can be used to easily revert to the old behavior if the new
 behavior causes breakage; otherwise, it can be removed after M145
 reaches stable.

 Enables the loading attribute for video and audio elements,
 allowing lazy loading similar to images.
 https://crbug.com/469111735

 Allow triggering the word suggestion from left click.
 From crbug.com/433209485

 Makes light dismiss for popovers and dialogs use the click event
 instead of pointerdown and pointerup in order to fix light dismiss
 bugs for touch inputs.
 https://issues.chromium.org/issues/408010435

 Reverse origin trial allowing Local Network Access requests on
 non-secure contexts (but still requiring a permission grant from the
 user).

 When the start-of-line position cannot be determined (e.g., because
 the caret is in an empty inline element with no layout information),
 fall back to the start of the enclosing block rather than the start
 of the entire editable root. See https://crbug.com/41053053.

 Enable sourceCharPosition for the invoke-type resolve-promise
 https://issues.chromium.org/issues/381529126

 Enable retrieving sourceLine and sourceColumn in LoAF implementation.
 https://issues.chromium.org/issues/391417815

 Add sourceLine and sourceColumn to PerformanceScriptTiming
 https://issues.chromium.org/issues/391417815

 Add styleDuration and layoutDuration to
 PerformanceLongAnimationFrameTiming and forcedStyleDuration and
 forcedLayoutDuration to PerformanceScriptTiming

 Long press on a link selects the link text instead of bringing up
 context menu. Enabled only on Android AuthView.

 Use LongAnimationFrameMonitor to emit longtask entries

 Enables macOS system-level clipboard permission checking using
 NSPasteboard.accessBehavior API (available on macOS 15.4+).
 This allows web applications to respect user's clipboard privacy
 settings in System Settings > Privacy & Security > Clipboard.

 CSS margin-trim property: https://drafts.csswg.org/css-box-4/#margin-trim

 Enables mirroring for stretchy and large MathML operators when
 the text direction is right to left.

 Enables MathML ancestor context preservation during copy-paste
 serialization. When enabled, copying partial MathML content includes
 the containing <math> element to preserve semantic context and
 namespace declarations.

 Enables skipping <mtr> wrapping during ancestor wrapping in
 serialization. When enabled duplicate <mtr> wrapping are absent.

 Set to reflect the kMediaEngagementBypassAutoplayPolicies feature.

 This feature helps to add memory consumer to NGShapeCache, so that
 the cached shape results would be cleared once exceeding the memory limit.

 Killswitch M149.

 Killswitch M149.

 This is enabled by default on Windows only. The only part that's
 "experimental" is the support on other platforms.

 Killswitch for crbug.com/40062462 fix.

 ModulePreloadReferrer enables modulepreload to send proper referrer
 headers as specified in the HTML spec.
 https://crbug.com/441933555

 https://crbug.com/466888680

 MojoJSTest is used exclusively in testing environments, whereas MojoJS
 may also be used elsewhere.

 Move the selection to the last position in the list item. See
 https://crbug.com/331841851

 https://chromestatus.com/feature/5054329641893888
 streamHTML, appendHTML, etc.

 Fix for https://crbug.com/482862753

 This turns off all font antialiasing for tests unless it is
 explicitly required and enabled using the
 "--enable-font-antialiasing" flag like in the case of
 "virtual/text-antialias/" virtual test suite.
 crbug.com/339041663

 Doesn't insert empty blockquotes on outdenting a blockquote. See
 https://crbug.com/323960902

 TODO(crbug.com/1426629): This feature enables the deprecated value
 slider-vertical. Disable this feature to stop parsing or allowing these
 values.
 https://drafts.csswg.org/css-ui-4/#appearance-switching

 Normalizes CRLF and standalone CR to LF in execCommand("insertText")
 for consistent newline handling in contenteditable elements.
 See https://crbug.com/41289410

 Converts mid-word U+00A0 (NBSP) to a regular space on paste and drop.
 This will be shipped in M148, and it can be removed in M150.
 See https://issues.chromium.org/issues/444065314.

 Preserve NBSP in plain-text editing contexts. Only normalize NBSP for
 paste/drop in rich-text editing contexts.
 See https://issues.chromium.org/issues/513279004.

 NotificationContentImage is not available in all platforms
 The Notification Center on Mac OS X does not support content images.

See crbug.com/512385682

 Kill switch for a fix to offset-path transform invalidation for
 https://crbug.com/463409688.

 The OpaqueRange interface provides a live AbstractRange subtype
 for encapsulated content within <textarea> and <input> elements.
 crbug.com/421421332

 Restrict popover invoker lookup to the same TreeScope as the element.
 This will be shipped in M142, and it can be removed in M144.
 See https://issues.chromium.org/issues/443031270.

 Makes option elements match :enabled or :disabled based on whether
 their ancestor select element is disabled.
 https://github.com/w3c/csswg-drafts/issues/13383
 https://issues.chromium.org/issues/490082172

 Define a sample API for testing integration with the Origin Trials
 Framework. The sample API is used in both unit and web tests for the
 Origin Trials Framework. Do not change this flag to stable, as it exists
 solely to generate code used by the sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.
 TODO(yashard): Add tests for this feature.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 Improves the performance of the global overlay:none!important UA style
 rule by replacing the normal UA style rule with other things which
 result in the same behavior. Added in M147, should be safe to remove
 in M150.

 Enables the CSS overlay property. When this flag is disabled, top
 layer exit animations will work without the need for using the overlay
 property.

 https://chromestatus.com/feature/5261280285949952

 Enable PaintOffsetTranslation for all composited LayoutObjects.
 Killswitch M148.

 PARAKEET ad serving runtime flag/JS API.

 This is to add an option to enable the Reveal button on password inputs while waiting ::reveal gets standardized.

 https://chromestatus.com/feature/5198846820352000

 PaymentRequest is enabled by default on Android

 Sends custom user timing events in subframes to the browser process.
 crbug.com/467177770 for more details.

 Enables performance.mark('mark_feature_usage'): crbug.com/1517170

 crbug.com/398955086

 This is a reverse OT used for a phased deprecation.
 https://crbug.com/918374

 Flag for enabling the pointer lock API on Android

 https://crbug.com/404479704

 Simplifies the behavior and stacking interactions of popover=hint and
 popover=auto. See https://crbug.com/499019927.
 This shipped in M150 and can be removed in M152.

 Kill switch for https://crbug.com/448173938 which changes position
 visibility to ignore non-clipping ancestors.

 Adds a web setting to disable CSS ScrollbarColor, ScrollbarWidth, and
 legacy ::-webkit-scrollbar* pseudo-element styling.

 Prefer not using composited scrolling. Composited scrolling will still
 be used if there are other reasons forcing compositing. For consistency,
 any code calling Settings::GetPreferCompositingToLCDTextEnabled() should
 ensure that this flag overrides the setting.

 Used to allow preloading data: URLs with link rel=preload.
 https://crbug.com/348442535

 Used to allow chrome://flags to turn off prerendering. (Without using
 the user-facing preloading settings page to turn off other
 preloading.) See https://crbug.com/1494471.

 It also has some feature params defined throughout the codebase.

 Used to allow prerender cross-origin iframes with an opt-in response
 header.
 https://chromestatus.com/feature/5112398709129216
 https://crbug.com/440387014

 Used to allow prerender activation by form submission.
 See https://crbug.com/346555939.

 When enabled, preserves dropEffect in drag event set during dragover
 events. See https://crbug.com/434151262

 When enabled, prevents undo to be applied if the enclosing block
 is not editable

 Controls the aggregate error reporting feature, which allows for
 contributions to be made conditional on error conditions that can be
 hit when using the API. This also defers contribution merging and
 modifies the budgeting flow.
 https://chromestatus.com/feature/5194896325214208

 Controls whether Private Aggregation's "maxContributions" field is
 enabled for Shared Storage callers. If disabled, the field will be
 ignored. https://chromestatus.com/feature/5189366316793856

 Always allow trust token issuance (so long as the base::Feature
 is enabled). Used for testing; circumvents a runtime check that,
 if this RuntimeEnabledFeature is not present, guarantees the origin
 trial is enabled.

 When enabled, dedicated workers can use profiler API

 Promisify programmatic scroll methods in Element and Window.
 https://crbug.com/41406914

 When enabled, setting progress.max enforces a >0 constraint.
 This will be shipped in M146, and it can be removed in M148.

 Propagate overscroll-behavior from the root element rather than the
 body element. crbug.com/41453796

 Protected memory varariant of the sample API for testing integration with
 the Origin Trials Framework. This is used only in unit tests.
 Do not change this flag to stable, as it exists
 solely to generate code used by the sample API implementation.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.
 TODO(yashard): Add tests for this feature.

 As above. Do not change this flag to stable, as it exists solely to
 generate code used by the origin trials sample API implementation.

 Allowing pseudo-elements to have focus.

 Support hit-testing for ::after, ::before, ::marker
 (e.g. for CSSPseudoElement).

 Support :hover on ::after, ::before, ::marker.

 ChromeStatus: https://chromestatus.com/feature/6194847180128256

 Enables support for a 'min' option in ReadableStream BYOBReader.read(),
 allowing callers to specify the minimum number of bytes to be read into
 the buffer before resolving the read request.
 https://chromestatus.com/feature/6396991665602560

 getType() on a ClipboardItem triggers the
 clipboard read operation, implementing lazy loading for clipboard data.
 Chrome status entry - https://chromestatus.com/feature/5203433409871872

 Enables correct reading-flow ordering when slots are involved.
 This will be shipped in M148, and it can be removed in M150.
 See https://issues.chromium.org/issues/452981723.

 Shipping in M148, so should be removed around M150.

 If enabled, both Accept-Language HTTP header and JavaScript getter will
 be reduced.

 If enabled, the minor version of the User-Agent string will be reduced.
 This User-Agent Reduction feature has been enabled starting from M101,
 but we still keep this flag for future phase tests.

 This feature acts as a kill switch for ISO-2022-JP auto-detection.
 This will be shipped in M139, and it can be removed in M141.
 See https://chromestatus.com/feature/6576566521561088.

 Optimize ReplaceChildren() to use RemoveChildren() for batch removal
 instead of looping RemoveChild(). This batches style invalidations
 improving performance.

 After paste operation removes the placeholder <br> tag
 that gets inserted in contenteditable as placeholder for newline

 Fix for removeFormat command incorrectly preserving background-color
 when removing styles from elements. Prevents background-color from being
 re-applied to child elements during style removal.
 See https://crbug.com/41438799

 Remove non-allowlisted event interfaces from document.createEvent().
 This was added in M148 and can be removed after M150.
 https://chromestatus.com/feature/5095987863486464
 https://issues.chromium.org/issues/41228793

 See https://issues.chromium.org/issues/40779139

 See https://issues.chromium.org/issues/41474791

 See https://issues.chromium.org/issues/41311101

 See https://github.com/whatwg/html/issues/11070
 ChromeStatus: https://chromestatus.com/feature/5207202081800192

 The renderpriority attribute feature.
 https://github.com/WICG/display-locking/blob/main/explainers/update-rendering.md

 Kill switch for painting non-SVG replaced normal-flow stacking
 contexts inline with their siblings.

 If enabled, makes the root scrollbars' foreground elements follow the
 browser

 Route matching, @route CSS rule, script type="routemap".
 https://chromestatus.com/feature/4771962874363904

 Enables the use of jitterBufferTarget attribute in WebRTC.
 Spec: https://w3c.github.io/webrtc-extensions/#dom-rtcrtpreceiver-jitterbuffertarget

 Legacy callback-based getStats() has limited availability unless this
 Deprecation Trial is enabled.
 TODO(https://crbug.com/822696): Remove when origin trial ends.

 Enables the use of |RTCRtpEncodingParameters.codec|

 Enables the use of SVC scalability mode in WebRTC.
 Spec: https://w3c.github.io/webrtc-svc/

 Runs a microtask checkpoint before prepare script in
 XML Parser. This was added in M148 and can be removed
 after M150.
 https://issues.chromium.org/issues/439639184

 HTML event loop invoking 'Run snapshot post-layout state steps' from
 the CSSOM View per spec proposal.

 https://issues.chromium.org/issues/429490608

 Spec: https://wicg.github.io/sanitizer-api/
 Tracking bug: crbug.com/356601280

 https://wicg.github.io/webcomponents/proposals/Scoped-Custom-Element-Registries
 https://github.com/whatwg/html/issues/10854
 Spec PRs:
 https://github.com/whatwg/html/pull/10869
 https://github.com/whatwg/dom/pull/1341

 https://github.com/WICG/view-transitions/blob/main/scoped-transitions.md

 https://github.com/w3c/window-management/issues/149

 crbug.com/406917902

 WebSpeech API with both speech recognition and synthesis functionality
 is not fully enabled on all platforms.

 Use parent element for text node to compute relative offset when
 serializing scroll anchor to ensure consistency with
 ComputeUniqueSelector()

 https://crbug.com/479472367

 https://github.com/w3c/csswg-drafts/issues/9576

 TODO(355460994): Remove after M129.
 scroll into root frame didn't take scrollbar and borders into account,
 while this is fixed, to avoid any web compat issues we have this killswitch.

 Separate flag for crbug.com/1426506 (getCurrentTime API change) which
 is expected to land after the initial launch of ScrollTimeline.

 https://github.com/w3c/csswg-drafts/issues/9367#issuecomment-1854280461

 Implements documentElement.scrollTop/Left and bodyElement.scrollTop/Left
 as per the spec, matching other Web engines.

 This flag can't be removed until the Android min SDK version is 28
 (i.e., 'P') or later.  See AWSettings.setScrollTopLeftInteropEnabled
 and its caller.

 Only consider unique case-insensitive scroll-to-text fragments.

 Allows CSS styling of browser search results.
 https://issues.chromium.org/issues/339298411
 https://chromestatus.com/feature/5195073796177920

 SecurePaymentConfirmation has shipped on some platforms, but its
 availability is controlled by the browser process (via the
 SecurePaymentConfirmationBrowser feature), as it requires browser
 support to function. See //content/public/common/content_features.cc

 The status is set to 'test' here to enable some WPT tests that only
 require blink-side support to function.

 SecurePaymentConfirmationAvailabilityAPI needs to be kept as a runtime
 flag in order to disable the API in WebView.

 SelectAudioOutput API
 https://chromestatus.com/feature/5164535504437248

 The selectedcontentelement attribute is for connecting select elements
 to arbitrary <selectedcontent> elements.
 https://github.com/openui/open-ui/issues/1063
 https://github.com/whatwg/html/issues/12227

 Makes the <selectedcontent> element work in <select multiple> by
 cloning the contents for each option which is selected into the
 <selectedcontent> element.
 https://issues.chromium.org/issues/483769482

 Aligns the implementation of the <selectedcontent> element with the
 HTML spec. https://issues.chromium.org/issues/458113204

 See https://crbug.com/40664519
 Disabled due to UI freeze issues, see https://crbug.com/448833953.

 Fixes selection focus affinity at soft wrap boundaries. When the focus
 of a range selection is at a soft wrap boundary (a DOM offset shared by
 two visual lines), this ensures the correct affinity is used based on
 the selection direction.
 See https://crbug.com/40980028

 Killswitch M141.

 https://issues.chromium.org/issues/40502558

 https://issues.chromium.org/issues/40502558

 Enables skipping user-select: none content
 in DOMSelection::toString()

 Conditionally update selection only when autoscroll actually scrolls.
 This prevents infinite selection updates during autoscroll when the
 scroll position doesn't change.
 See https://crbug.com/412578722

 See https://crbug.com/395544401

 See https://chromestatus.com/feature/5203433409871872

 See https://chromestatus.com/feature/4811835974615040

 Removes the forced overflow:hidden rules on the select element's
 InnerElement unless the author specifies text-overflow:ellipsis. May
 cause text to overlap with the dropdown indicator.
 https://issues.chromium.org/issues/40805967

 SlotChange signal is sent after node insertion is complete,
 ensuring that slot fallback content is handled correctly.
 This was added in M145 and can be removed after M147.
 https://issues.chromium.org/issues/40150299

 Separate defer and module script execution into individual tasks
 to comply with HTML spec requirement to "spin the event loop" between
 each script execution. This prevents long tasks and improves responsiveness.
 https://crbug.com/40894694

 Support for Service Worker background sync APIs in Dedicated Workers.
 See https://chromestatus.com/feature/6497653025931264
 See https://issues.chromium.org/issues/40364838

 Support for Service Worker APIs in Dedicated Workers.
 See https://chromestatus.com/feature/6497653025931264
 See https://issues.chromium.org/issues/40364838

 When enabled, sets the default drop effect as according to spec for
 events like dragOver, dragLeave, etc. See https://crbug.com/434151262

 https://chromestatus.com/feature/5176753681203200

 https://crbug.com/448174611

 Reference Target allows IDREF attributes to refer inside Shadow DOM.
 crbug.com/346835896

 If enabled, Reference Target will support aria-owns.
 https://github.com/WICG/webcomponents/issues/1091

 If enabled, SharedWorker supports extendedLifetime
 https://github.com/whatwg/html/issues/10997
 https://issues.chromium.org/issues/400473072

 If enabled, only call ResourceLoadObserver callbacks if the DevTools
 panel is open.

 Improves performance of event dispatching by skipping the capture
 phase if there are no capture listeners registered on the page.

 When enabled, cursor movement (arrow keys) will skip over non-editable
 atomic or empty inline elements within editable content, instead of
 getting stuck or moving into the non-editable content.

 Skips paragraph split in insertHTML when the fragment contains only
 inline content, preventing inline elements from being inserted
 outside their containing block.
 See https://crbug.com/41024699.

 Skip lines that contain only pseudo-element content (like ::before
 or ::after) when determining valid caret positions for line
 navigation. Pseudo-elements don't have DOM nodes for caret positioning,
 so including them caused incorrect selection behavior.
 See crbug.com/357889508

 Skips the browser touch event filter, ensuring that events that reach
 the queue and would otherwise be filtered out will instead be passed
 onto the renderer compositor process as long as the page hasn't timed
 out. If skip_filtering_process is browser_and_renderer, also skip the
 renderer cc touch event filter, ensuring that events will be passed
 onto the renderer main thread.

 Fix for crbug.com/41393366

 See crbug.com/446113738.

 Snapshot scroll-timelines post layout only. See
 RunSnapshotPostLayoutStateSteps flag.

 Used to enable the code for detecting soft navigations through task
 attribution. Set to stable as this generates an enabled-by-default
 base::Feature for a field-trial remote shutoff. Needs to be a runtime
 feature so that the Soft Navigation Heuristics Origin Trial can depend
 on it.

 Source-specific multicast support in the Direct Sockets API.

 Whether spatial navigation should use cursor inheritance to exclude
 nodes where cursor is inherited. Kill-switch that can be remove once
 the change goes through a stable release.

 Exposes speculation measurement data (preloads, prefetches, prerenders)
 on performance.speculations.