// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module blink.mojom;

// ============ Definition for WebFeature used for UseCounter ===============
//
// Do not change assigned numbers of existing items: add new features
// to the end of the list.
//
// If you want to mark an item as no-longer-used, simply rename it, prefixing
// "kOBSOLETE_" before the existing name.
// E.g. kFrobulate becomes kOBSOLETE_Frobulate.
//
// A WebFeature conceptually represents some particular web-exposed API
// or code path which can be used/triggered by a web page.
// TODO(rbyers): Add CSS and animated CSS feature types by making this a
// more sophisticated class.
enum WebFeature {
  kOBSOLETE_PageDestruction = 0,
  kWorkerStart = 4,
  kSharedWorkerStart = 5,
  kOpenWebDatabase = 10,
  kUnprefixedRequestAnimationFrame = 13,
  kPrefixedRequestAnimationFrame = 14,
  kContentSecurityPolicy = 15,
  kContentSecurityPolicyReportOnly = 16,
  kPrefixedTransitionEndEvent = 18,
  kUnprefixedTransitionEndEvent = 19,
  kPrefixedAndUnprefixedTransitionEndEvent = 20,
  kAutoFocusAttribute = 21,
  kDataListElement = 23,
  kFormAttribute = 24,
  kIncrementalAttribute = 25,
  kInputTypeColor = 26,
  kInputTypeDate = 27,
  kInputTypeDateTimeFallback = 29,
  kInputTypeDateTimeLocal = 30,
  kInputTypeEmail = 31,
  kInputTypeMonth = 32,
  kInputTypeNumber = 33,
  kInputTypeRange = 34,
  kInputTypeSearch = 35,
  kInputTypeTel = 36,
  kInputTypeTime = 37,
  kInputTypeURL = 38,
  kInputTypeWeek = 39,
  kInputTypeWeekFallback = 40,
  kListAttribute = 41,
  kMaxAttribute = 42,
  kMinAttribute = 43,
  kPatternAttribute = 44,
  kPlaceholderAttribute = 45,
  kPrefixedDirectoryAttribute = 47,
  kRequiredAttribute = 49,
  kStepAttribute = 51,
  kPageVisits = 52,
  kHTMLMarqueeElement = 53,
  kReflection = 55,
  kPrefixedStorageInfo = 57,
  kDeprecatedFlexboxWebContent = 61,
  kDeprecatedFlexboxChrome = 62,
  kDeprecatedFlexboxChromeExtension = 63,
  kWindowEvent = 69,
  kContentSecurityPolicyWithBaseElement = 70,
  kDocumentClear = 74,
  kXMLDocument = 77,
  kXSLProcessingInstruction = 78,
  kXSLTProcessor = 79,
  kSVGSwitchElement = 80,
  kDocumentAll = 83,
  kFormElement = 84,
  kDemotedFormElement = 85,
  kSVGAnimationElement = 90,
  kLineClamp = 96,
  kSubFrameBeforeUnloadRegistered = 97,
  kSubFrameBeforeUnloadFired = 98,
  kDocumentCreateAttribute = 111,
  kDocumentCreateAttributeNS = 112,
  kDocumentXMLEncoding = 115,    // Removed from DOM4.
  kDocumentXMLStandalone = 116,  // Removed from DOM4.
  kDocumentXMLVersion = 117,     // Removed from DOM4.
  kNavigatorProductSub = 123,
  kNavigatorVendor = 124,
  kNavigatorVendorSub = 125,
  kPrefixedAnimationEndEvent = 128,
  kUnprefixedAnimationEndEvent = 129,
  kPrefixedAndUnprefixedAnimationEndEvent = 130,
  kPrefixedAnimationStartEvent = 131,
  kUnprefixedAnimationStartEvent = 132,
  kPrefixedAndUnprefixedAnimationStartEvent = 133,
  kPrefixedAnimationIterationEvent = 134,
  kUnprefixedAnimationIterationEvent = 135,
  kPrefixedAndUnprefixedAnimationIterationEvent = 136,
  kEventReturnValue = 137,  // Legacy IE extension.
  kSVGSVGElement = 138,
  kDOMSubtreeModifiedEvent = 143,
  kDOMNodeInsertedEvent = 144,
  kDOMNodeRemovedEvent = 145,
  kDOMNodeRemovedFromDocumentEvent = 146,
  kDOMNodeInsertedIntoDocumentEvent = 147,
  kDOMCharacterDataModifiedEvent = 148,
  kPrefixedAudioDecodedByteCount = 164,
  kPrefixedVideoDecodedByteCount = 165,
  kPrefixedVideoSupportsFullscreen = 166,
  kPrefixedVideoDisplayingFullscreen = 167,
  kPrefixedVideoEnterFullscreen = 168,
  kPrefixedVideoExitFullscreen = 169,
  kPrefixedVideoEnterFullScreen = 170,
  kPrefixedVideoExitFullScreen = 171,
  kPrefixedVideoDecodedFrameCount = 172,
  kPrefixedVideoDroppedFrameCount = 173,
  kPrefixedElementRequestFullscreen = 176,
  kPrefixedElementRequestFullScreen = 177,
  kBarPropLocationbar = 178,
  kBarPropMenubar = 179,
  kBarPropPersonalbar = 180,
  kBarPropScrollbars = 181,
  kBarPropStatusbar = 182,
  kBarPropToolbar = 183,
  kInputTypeEmailMultiple = 184,
  kInputTypeEmailMaxLength = 185,
  kInputTypeEmailMultipleMaxLength = 186,
  kInputTypeText = 190,
  kInputTypeTextMaxLength = 191,
  kInputTypePassword = 192,
  kInputTypePasswordMaxLength = 193,
  kPrefixedPageVisibility = 196,
  kDocumentBeforeUnloadRegistered = 200,
  kDocumentBeforeUnloadFired = 201,
  kDocumentUnloadRegistered = 202,
  kDocumentUnloadFired = 203,
  kSVGLocatableNearestViewportElement = 204,
  kSVGLocatableFarthestViewportElement = 205,
  kSVGPointMatrixTransform = 209,
  kDOMFocusInOutEvent = 211,
  kFileGetLastModifiedDate = 212,
  kHTMLElementInnerText = 213,
  kHTMLElementOuterText = 214,
  kReplaceDocumentViaJavaScriptURL = 215,
  kElementPrefixedMatchesSelector = 217,
  kCSSStyleSheetRules = 219,
  kCSSStyleSheetAddRule = 220,
  kCSSStyleSheetRemoveRule = 221,
  // The above items are available in M33 branch.

  kInitMessageEvent = 222,
  kPrefixedDevicePixelRatioMediaFeature = 233,
  kPrefixedMaxDevicePixelRatioMediaFeature = 234,
  kPrefixedMinDevicePixelRatioMediaFeature = 235,
  kPrefixedTransform3dMediaFeature = 237,
  kPrefixedStorageQuota = 240,
  kResetReferrerPolicy = 243,
  // Case-insensitivity dropped from specification.
  kCaseInsensitiveAttrSelectorMatch = 244,
  kFormNameAccessForImageElement = 246,
  kFormNameAccessForPastNamesMap = 247,
  kFormAssociationByParser = 248,
  kSVGSVGElementInDocument = 250,
  kSVGDocumentRootElement = 251,
  kDeprecatedWebKitGradient = 260,
  kDeprecatedWebKitLinearGradient = 261,
  kDeprecatedWebKitRepeatingLinearGradient = 262,
  kDeprecatedWebKitRadialGradient = 263,
  kDeprecatedWebKitRepeatingRadialGradient = 264,
  // The above items are available in M34 branch.

  kTextAutosizing = 274,
  kHTMLAnchorElementPingAttribute = 276,
  kSVGClassName = 279,
  kHTMLMediaElementSeekToFragmentStart = 281,
  kHTMLMediaElementPauseAtFragmentEnd = 282,
  kPrefixedWindowURL = 283,
  kWindowOrientation = 285,
  kDocumentCaptureEvents = 287,
  kDocumentReleaseEvents = 288,
  kWindowCaptureEvents = 289,
  kWindowReleaseEvents = 290,
  kDocumentXPathCreateExpression = 295,
  kDocumentXPathCreateNSResolver = 296,
  kDocumentXPathEvaluate = 297,
  kPrefixedCancelAnimationFrame = 304,
  kNamedNodeMapGetNamedItem = 306,
  kNamedNodeMapSetNamedItem = 307,
  kNamedNodeMapRemoveNamedItem = 308,
  kNamedNodeMapItem = 309,
  kNamedNodeMapGetNamedItemNS = 310,
  kNamedNodeMapSetNamedItemNS = 311,
  kNamedNodeMapRemoveNamedItemNS = 312,
  kPrefixedDocumentIsFullscreen = 318,
  kPrefixedDocumentCurrentFullScreenElement = 320,
  kPrefixedDocumentCancelFullScreen = 321,
  kPrefixedDocumentFullscreenEnabled = 322,
  kPrefixedDocumentFullscreenElement = 323,
  kPrefixedDocumentExitFullscreen = 324,
  // The above items are available in M35 branch.

  kSVGForeignObjectElement = 325,
  kSelectionSetPosition = 327,
  kAnimationFinishEvent = 328,
  kSVGSVGElementInXMLDocument = 329,
  kEventSrcElement = 343,
  kEventCancelBubble = 344,
  kEventPath = 345,
  kNodeIteratorDetach = 347,
  kEventGetReturnValueTrue = 350,
  kEventGetReturnValueFalse = 351,
  kEventSetReturnValueTrue = 352,
  kEventSetReturnValueFalse = 353,
  kWindowOffscreenBuffering = 356,
  kWindowDefaultStatus = 357,
  kWindowDefaultstatus = 358,
  kPrefixedTransitionEventConstructor = 361,
  kPrefixedMutationObserverConstructor = 362,
  kNotificationPermission = 371,
  kRangeDetach = 372,
  kPrefixedFileRelativePath = 386,
  kDocumentCaretRangeFromPoint = 387,
  kElementScrollIntoViewIfNeeded = 389,
  kRangeExpand = 393,
  kHTMLImageElementX = 396,
  kHTMLImageElementY = 397,
  kSelectionBaseNode = 400,
  kSelectionBaseOffset = 401,
  kSelectionExtentNode = 402,
  kSelectionExtentOffset = 403,
  kSelectionType = 404,
  kSelectionModify = 405,
  kSelectionSetBaseAndExtent = 406,
  kSelectionEmpty = 407,
  kVTTCue = 409,
  kVTTCueRender = 410,
  kVTTCueRenderVertical = 411,
  kVTTCueRenderSnapToLinesFalse = 412,
  kVTTCueRenderLineNotAuto = 413,
  kVTTCueRenderPositionNot50 = 414,
  kVTTCueRenderSizeNot100 = 415,
  kVTTCueRenderAlignNotCenter = 416,
  // The above items are available in M36 branch.

  kElementRequestPointerLock = 417,
  kVTTCueRenderRtl = 418,
  kPostMessageFromSecureToInsecure = 419,
  kPostMessageFromInsecureToSecure = 420,
  kDocumentExitPointerLock = 421,
  kDocumentPointerLockElement = 422,
  kPrefixedCursorZoomIn = 424,
  kPrefixedCursorZoomOut = 425,
  kTextEncoderConstructor = 429,
  kTextEncoderEncode = 430,
  kTextDecoderConstructor = 431,
  kTextDecoderDecode = 432,
  kFocusInOutEvent = 433,
  kMouseEventMovementX = 434,
  kMouseEventMovementY = 435,
  kDocumentFonts = 440,
  kMixedContentFormsSubmitted = 441,
  kFormsSubmitted = 442,
  kHTMLImports = 455,
  kOBSOLETE_ElementCreateShadowRoot = 456,
  kDocumentRegisterElement = 457,
  kEditingAppleInterchangeNewline = 458,
  kEditingAppleConvertedSpace = 459,
  kEditingApplePasteAsQuotation = 460,
  kEditingAppleStyleSpanClass = 461,
  kHTMLImportsAsyncAttribute = 463,
  kXMLHttpRequestSynchronous = 465,
  kCSSSelectorPseudoUnresolved = 466,
  kOBSOLETE_CSSSelectorPseudoShadow = 467,
  kOBSOLETE_CSSSelectorPseudoContent = 468,
  kCSSSelectorPseudoHost = 469,
  kCSSSelectorPseudoHostContext = 470,
  kOBSOLETE_CSSDeepCombinator = 471,
  // The above items are available in M37 branch.

  kUseAsm = 473,
  kDOMWindowOpen = 475,
  kDOMWindowOpenFeatures = 476,
  kAspectRatioFlexItem = 479,
  kDetailsElement = 480,
  kDialogElement = 481,
  kMapElement = 482,
  kMeterElement = 483,
  kProgressElement = 484,
  kWheelEventWheelDeltaX = 491,
  kWheelEventWheelDeltaY = 492,
  kWheelEventWheelDelta = 493,
  kSendBeacon = 494,
  kSendBeaconQuotaExceeded = 495,
  kSVGSMILElementInDocument = 501,
  kMouseEventOffsetX = 502,
  kMouseEventOffsetY = 503,
  kMouseEventX = 504,
  kMouseEventY = 505,
  kMouseEventFromElement = 506,
  kMouseEventToElement = 507,
  kRequestFileSystem = 508,
  kRequestFileSystemWorker = 509,
  kRequestFileSystemSyncWorker = 510,
  kSVGStyleElementTitle = 519,
  kPictureSourceSrc = 520,
  // The above items are available in M38 branch.

  kPicture = 521,
  kSizes = 522,
  kSrcsetXDescriptor = 523,
  kSrcsetWDescriptor = 524,
  kSelectionContainsNode = 525,
  kXMLExternalResourceLoad = 529,
  kMixedContentPrivateHostnameInPublicHostname = 530,
  kLegacyProtocolEmbeddedAsSubresource = 531,
  kRequestedSubresourceWithEmbeddedCredentials = 532,
  kNotificationCreated = 533,
  kNotificationClosed = 534,
  kNotificationPermissionRequested = 535,
  kSRIElementWithMatchingIntegrityAttribute = 540,
  kSRIElementWithNonMatchingIntegrityAttribute = 541,
  kSRIElementWithUnparsableIntegrityAttribute = 542,
  kV8Animation_StartTime_AttributeGetter = 545,
  kV8Animation_StartTime_AttributeSetter = 546,
  kV8Animation_CurrentTime_AttributeGetter = 547,
  kV8Animation_CurrentTime_AttributeSetter = 548,
  kV8Animation_PlaybackRate_AttributeGetter = 549,
  kV8Animation_PlaybackRate_AttributeSetter = 550,
  kV8Animation_PlayState_AttributeGetter = 551,
  kV8Animation_Finish_Method = 552,
  kV8Animation_Play_Method = 553,
  kV8Animation_Pause_Method = 554,
  kV8Animation_Reverse_Method = 555,
  // The above items are available in M39 branch.

  kBreakIterator = 556,
  kScreenOrientationAngle = 557,
  kScreenOrientationType = 558,
  kScreenOrientationLock = 559,
  kScreenOrientationUnlock = 560,
  kGeolocationSecureOrigin = 561,
  kGeolocationInsecureOrigin = 562,
  kNotificationSecureOrigin = 563,
  kNotificationInsecureOrigin = 564,
  kNotificationShowEvent = 565,
  kSVGTransformListConsolidate = 569,
  kSVGAnimatedTransformListBaseVal = 570,
  kQuotedAnimationName = 571,
  kQuotedKeyframesRule = 572,
  kSrcsetDroppedCandidate = 573,
  kWindowPostMessage = 574,
  kRenderRuby = 576,
  kScriptElementWithInvalidTypeHasSrc = 578,
  kXMLHttpRequestSynchronousInNonWorkerOutsideBeforeUnload = 581,
  kCSSSelectorPseudoScrollbar = 582,
  kCSSSelectorPseudoScrollbarButton = 583,
  kCSSSelectorPseudoScrollbarThumb = 584,
  kCSSSelectorPseudoScrollbarTrack = 585,
  kCSSSelectorPseudoScrollbarTrackPiece = 586,
  kLangAttribute = 587,
  kLangAttributeOnHTML = 588,
  kLangAttributeOnBody = 589,
  kLangAttributeDoesNotMatchToUILocale = 590,
  kInputTypeSubmit = 591,
  kInputTypeSubmitWithValue = 592,
  // The above items are available in M40 branch.

  kSetReferrerPolicy = 593,
  kTextWholeText = 599,
  kNotificationCloseEvent = 603,
  kStyleMedia = 606,
  kStyleMediaType = 607,
  kStyleMediaMatchMedium = 608,
  kMixedContentPresent = 609,
  kMixedContentBlockable = 610,
  kMixedContentAudio = 611,
  kMixedContentDownload = 612,
  kMixedContentFavicon = 613,
  kMixedContentImage = 614,
  kMixedContentInternal = 615,
  kMixedContentPlugin = 616,
  kMixedContentPrefetch = 617,
  kMixedContentVideo = 618,
  kCSSSelectorPseudoFullScreenAncestor = 628,
  kCSSSelectorPseudoFullScreen = 629,
  kWebKitCSSMatrix = 630,
  kAudioContextCreateAnalyser = 631,
  kAudioContextCreateBiquadFilter = 632,
  kAudioContextCreateBufferSource = 633,
  kAudioContextCreateChannelMerger = 634,
  kAudioContextCreateChannelSplitter = 635,
  kAudioContextCreateConvolver = 636,
  kAudioContextCreateDelay = 637,
  kAudioContextCreateDynamicsCompressor = 638,
  kAudioContextCreateGain = 639,
  kAudioContextCreateMediaElementSource = 640,
  kAudioContextCreateMediaStreamDestination = 641,
  kAudioContextCreateMediaStreamSource = 642,
  kAudioContextCreateOscillator = 643,
  kAudioContextCreatePeriodicWave = 645,
  kAudioContextCreateScriptProcessor = 646,
  kAudioContextCreateStereoPanner = 647,
  kAudioContextCreateWaveShaper = 648,
  kAudioContextDecodeAudioData = 649,
  kAudioContextResume = 650,
  kAudioContextSuspend = 651,
  kMixedContentInNonHTTPSFrameThatRestrictsMixedContent = 661,
  kMixedContentInSecureFrameThatDoesNotRestrictMixedContent = 662,
  kMixedContentWebSocket = 663,
  kSyntheticKeyframesInCompositedCSSAnimation = 664,
  kMixedContentFormPresent = 665,
  kGetUserMediaInsecureOrigin = 666,
  kGetUserMediaSecureOrigin = 667,
  // The above items are available in M41 branch.

  kOBSOLETE_DeviceMotionInsecureOrigin = 668,
  kDeviceMotionSecureOrigin = 669,
  kOBSOLETE_DeviceOrientationInsecureOrigin = 670,
  kDeviceOrientationSecureOrigin = 671,
  kSandboxViaIFrame = 672,
  kSandboxViaCSP = 673,
  kBlockedSniffingImageToScript = 674,
  kFetch = 675,
  kFetchBodyStream = 676,
  kXMLHttpRequestAsynchronous = 677,
  kWhiteSpacePreFromXMLSpace = 679,
  kWhiteSpaceNowrapFromXMLSpace = 680,
  kSVGSVGElementForceRedraw = 685,
  kSVGSVGElementSuspendRedraw = 686,
  kSVGSVGElementUnsuspendRedraw = 687,
  kSVGSVGElementUnsuspendRedrawAll = 688,
  kAudioContextClose = 689,
  kCSSZoomNotEqualToOne = 691,
  // The above items are available in M42 branch.

  kClientRectListItem = 694,
  kWindowClientInformation = 695,
  kWindowFind = 696,
  kWindowScreenLeft = 697,
  kWindowScreenTop = 698,
  kV8Animation_Cancel_Method = 699,
  kV8Animation_Onfinish_AttributeGetter = 700,
  kV8Animation_Onfinish_AttributeSetter = 701,
  kV8Window_WebKitAnimationEvent_ConstructorGetter = 707,
  kCryptoGetRandomValues = 710,
  kSubtleCryptoEncrypt = 711,
  kSubtleCryptoDecrypt = 712,
  kSubtleCryptoSign = 713,
  kSubtleCryptoVerify = 714,
  kSubtleCryptoDigest = 715,
  kSubtleCryptoGenerateKey = 716,
  kSubtleCryptoImportKey = 717,
  kSubtleCryptoExportKey = 718,
  kSubtleCryptoDeriveBits = 719,
  kSubtleCryptoDeriveKey = 720,
  kSubtleCryptoWrapKey = 721,
  kSubtleCryptoUnwrapKey = 722,
  kCryptoAlgorithmAesCbc = 723,
  kCryptoAlgorithmHmac = 724,
  kCryptoAlgorithmRsaSsaPkcs1v1_5 = 725,
  kCryptoAlgorithmSha1 = 726,
  kCryptoAlgorithmSha256 = 727,
  kCryptoAlgorithmSha384 = 728,
  kCryptoAlgorithmSha512 = 729,
  kCryptoAlgorithmAesGcm = 730,
  kCryptoAlgorithmRsaOaep = 731,
  kCryptoAlgorithmAesCtr = 732,
  kCryptoAlgorithmAesKw = 733,
  kCryptoAlgorithmRsaPss = 734,
  kCryptoAlgorithmEcdsa = 735,
  kCryptoAlgorithmEcdh = 736,
  kCryptoAlgorithmHkdf = 737,
  kCryptoAlgorithmPbkdf2 = 738,
  kDocumentSetDomain = 739,
  kUpgradeInsecureRequestsEnabled = 740,
  kOBSOLETE_UpgradeInsecureRequestsUpgradedRequest = 741,
  kDocumentDesignMode = 742,
  kGlobalCacheStorage = 743,
  kNetInfo = 744,
  kBackgroundSync = 745,
  kLegacyConst = 748,
  kV8Permissions_Query_Method = 750,
  // The above items are available in M43 branch.

  kSVGHrefBaseVal = 758,
  kSVGHrefAnimVal = 759,
  kV8CSSRuleList_Item_Method = 760,
  kV8MediaList_Item_Method = 761,
  kV8StyleSheetList_Item_Method = 762,
  kStyleSheetListAnonymousNamedGetter = 763,
  kAutocapitalizeAttribute = 764,
  kFullscreenSecureOrigin = 765,
  kFullscreenInsecureOrigin = 766,
  kDialogInSandboxedContext = 767,
  kSVGSMILAnimationInImageRegardlessOfCache = 768,
  kEncryptedMediaSecureOrigin = 770,
  kPerformanceFrameTiming = 772,
  kV8Element_Animate_Method = 773,
  // The above items are available in M44 branch.

  kV8SVGSVGElement_GetElementById_Method = 778,
  kV8MessageChannel_Constructor = 780,
  kV8MessagePort_PostMessage_Method = 781,
  kV8MessagePort_Start_Method = 782,
  kV8MessagePort_Close_Method = 783,
  kMessagePortsTransferred = 784,
  kCSSKeyframesRuleAnonymousIndexedGetter = 785,
  kV8Screen_AvailLeft_AttributeGetter = 786,
  kV8Screen_AvailTop_AttributeGetter = 787,
  kV8SVGFEConvolveMatrixElement_PreserveAlpha_AttributeGetter = 791,
  kV8SVGStyleElement_Disabled_AttributeGetter = 798,
  kV8SVGStyleElement_Disabled_AttributeSetter = 799,
  kInputTypeFileSecureOrigin = 801,
  kInputTypeFileInsecureOrigin = 802,
  kElementAttachShadow = 804,
  kV8SecurityPolicyViolationEvent_DocumentURI_AttributeGetter = 806,
  kV8SecurityPolicyViolationEvent_BlockedURI_AttributeGetter = 807,
  kV8SecurityPolicyViolationEvent_StatusCode_AttributeGetter = 808,
  kHTMLLinkElementDisabled = 809,
  kV8HTMLLinkElement_Disabled_AttributeGetter = 810,
  kV8HTMLLinkElement_Disabled_AttributeSetter = 811,
  kV8HTMLStyleElement_Disabled_AttributeGetter = 812,
  kV8HTMLStyleElement_Disabled_AttributeSetter = 813,
  kV8DOMError_Constructor = 816,
  kV8DOMError_Name_AttributeGetter = 817,
  kV8DOMError_Message_AttributeGetter = 818,
  kTextInputFired = 830,
  kV8TextEvent_Data_AttributeGetter = 831,
  kV8TextEvent_InitTextEvent_Method = 832,
  kClientHintsDPR = 835,
  kClientHintsResourceWidth = 836,
  kClientHintsViewportWidth = 837,
  kSRIElementIntegrityAttributeButIneligible = 838,
  kFormDataAppendNull = 843,
  kNonHTMLElementSetAttributeNodeFromHTMLDocumentNameNotLowercase = 845,
  kNavigatorVibrate = 850,
  kNavigatorVibrateSubFrame = 851,
  kV8XPathEvaluator_Constructor = 853,
  kV8XPathEvaluator_CreateExpression_Method = 854,
  kV8XPathEvaluator_CreateNSResolver_Method = 855,
  kV8XPathEvaluator_Evaluate_Method = 856,
  kRequestMIDIAccess_ObscuredByFootprinting = 857,
  kV8MouseEvent_LayerX_AttributeGetter = 858,
  kV8MouseEvent_LayerY_AttributeGetter = 859,
  kInnerTextWithShadowTree = 860,
  kSelectionToStringWithShadowTree = 861,
  kWindowFindWithShadowTree = 862,
  kV8CompositionEvent_InitCompositionEvent_Method = 863,
  kV8CustomEvent_InitCustomEvent_Method = 864,
  kV8DeviceMotionEvent_InitDeviceMotionEvent_Method = 865,
  kV8DeviceOrientationEvent_InitDeviceOrientationEvent_Method = 866,
  kV8Event_InitEvent_Method = 867,
  kV8KeyboardEvent_InitKeyboardEvent_Method = 868,
  kV8MouseEvent_InitMouseEvent_Method = 869,
  kV8MutationEvent_InitMutationEvent_Method = 870,
  kV8StorageEvent_InitStorageEvent_Method = 871,
  kV8UIEvent_InitUIEvent_Method = 873,
  kRequestFileSystemNonWebbyOrigin = 876,
  kV8MemoryInfo_TotalJSHeapSize_AttributeGetter = 879,
  kV8MemoryInfo_UsedJSHeapSize_AttributeGetter = 880,
  kV8MemoryInfo_JSHeapSizeLimit_AttributeGetter = 881,
  kV8Performance_Timing_AttributeGetter = 882,
  kV8Performance_Navigation_AttributeGetter = 883,
  kV8Performance_Memory_AttributeGetter = 884,
  kV8SharedWorker_WorkerStart_AttributeGetter = 885,
  // The above items are available in M45 branch.

  kHTMLMediaElementPreloadNone = 892,
  kHTMLMediaElementPreloadMetadata = 893,
  kHTMLMediaElementPreloadAuto = 894,
  kHTMLMediaElementPreloadDefault = 895,
  kMixedContentBlockableAllowed = 896,
  kPseudoBeforeAfterForInputElement = 897,
  kV8Permissions_Revoke_Method = 898,
  kLinkRelDnsPrefetch = 899,
  kLinkRelPreconnect = 900,
  kLinkRelPreload = 901,
  kLinkHeaderDnsPrefetch = 902,
  kLinkHeaderPreconnect = 903,
  kClientHintsMetaAcceptCH = 904,
  kHTMLElementDeprecatedWidth = 905,
  kClientHintsContentDPR = 906,
  kElementAttachShadowOpen = 907,
  kElementAttachShadowClosed = 908,
  kAudioParamSetValueAtTime = 909,
  kAudioParamLinearRampToValueAtTime = 910,
  kAudioParamExponentialRampToValueAtTime = 911,
  kAudioParamSetTargetAtTime = 912,
  kAudioParamSetValueCurveAtTime = 913,
  kAudioParamCancelScheduledValues = 914,
  kV8Permissions_Request_Method = 915,
  kLinkRelPrefetch = 917,
  kLinkRelPrerender = 918,
  kLinkRelNext = 919,
  kCSSValuePrefixedMinContent = 921,
  kCSSValuePrefixedMaxContent = 922,
  kCSSValuePrefixedFitContent = 923,
  kCSSValuePrefixedFillAvailable = 924,
  kPresentationDefaultRequest = 926,
  kPresentationAvailabilityChangeEventListener = 927,
  kPresentationRequestConstructor = 928,
  kPresentationRequestStart = 929,
  kPresentationRequestReconnect = 930,
  kPresentationRequestGetAvailability = 931,
  kPresentationRequestConnectionAvailableEventListener = 932,
  kPresentationConnectionTerminate = 933,
  kPresentationConnectionSend = 934,
  kPresentationConnectionMessageEventListener = 936,
  kCSSAnimationsStackedNeutralKeyframe = 937,
  kReadingCheckedInClickHandler = 938,
  kFlexboxIntrinsicSizeAlgorithmIsDifferent = 939,
  // The above items are available in M46 branch.

  kOBSOLETE_HTMLImportsHasStyleSheets = 940,
  kNetInfoType = 946,
  kNetInfoDownlinkMax = 947,
  kNetInfoOnChange = 948,
  kNetInfoOnTypeChange = 949,
  kV8Window_Alert_Method = 950,
  kV8Window_Confirm_Method = 951,
  kV8Window_Prompt_Method = 952,
  kV8Window_Print_Method = 953,
  kV8Window_RequestIdleCallback_Method = 954,
  kFlexboxPercentagePaddingVertical = 955,
  kFlexboxPercentageMarginVertical = 956,
  kCredentialManagerGet = 960,
  kCredentialManagerGetMediationOptional = 961,
  kCredentialManagerGetMediationSilent = 962,
  kCredentialManagerStore = 963,
  // The above items are available in M47 branch.

  kBlockableMixedContentInSubframeBlocked = 966,
  kCSSAtRuleCharset = 969,
  kCSSAtRuleFontFace = 970,
  kCSSAtRuleImport = 971,
  kCSSAtRuleKeyframes = 972,
  kCSSAtRuleMedia = 973,
  kCSSAtRuleNamespace = 974,
  kCSSAtRulePage = 975,
  kCSSAtRuleSupports = 976,
  kCSSAtRuleViewport = 977,
  kCSSAtRuleWebkitKeyframes = 978,
  kV8HTMLFieldSetElement_Elements_AttributeGetter = 979,
  kExternalAddSearchProvider = 981,
  kExternalIsSearchProviderInstalled = 982,
  kV8Permissions_RequestAll_Method = 983,
  kOBSOLETE_DeviceOrientationAbsoluteInsecureOrigin = 987,
  kDeviceOrientationAbsoluteSecureOrigin = 988,
  kFontFaceConstructor = 989,
  kServiceWorkerControlledPage = 990,
  kMeterElementWithMeterAppearance = 993,
  kMeterElementWithNoneAppearance = 994,
  kSelectionAnchorNode = 997,
  kSelectionAnchorOffset = 998,
  kSelectionFocusNode = 999,
  kSelectionFocusOffset = 1000,
  kSelectionIsCollapsed = 1001,
  kSelectionRangeCount = 1002,
  kSelectionGetRangeAt = 1003,
  kSelectionAddRange = 1004,
  kSelectionRemoveAllRanges = 1005,
  kSelectionCollapse = 1006,
  kSelectionCollapseToStart = 1007,
  kSelectionCollapseToEnd = 1008,
  kSelectionExtend = 1009,
  kSelectionSelectAllChildren = 1010,
  kSelectionDeleteDromDocument = 1011,
  kSelectionDOMString = 1012,
  kInputTypeRangeVerticalAppearance = 1013,
  // The above items are available in M48 branch.

  kCSSFilterReference = 1014,
  kCSSFilterGrayscale = 1015,
  kCSSFilterSepia = 1016,
  kCSSFilterSaturate = 1017,
  kCSSFilterHueRotate = 1018,
  kCSSFilterInvert = 1019,
  kCSSFilterOpacity = 1020,
  kCSSFilterBrightness = 1021,
  kCSSFilterContrast = 1022,
  kCSSFilterBlur = 1023,
  kCSSFilterDropShadow = 1024,
  kBackgroundSyncRegister = 1025,
  kExecCommandOnInputOrTextarea = 1027,
  kV8History_ScrollRestoration_AttributeGetter = 1028,
  kV8History_ScrollRestoration_AttributeSetter = 1029,
  kSVG1DOMFilter = 1030,
  kOfflineAudioContextStartRendering = 1031,
  kOfflineAudioContextSuspend = 1032,
  kOfflineAudioContextResume = 1033,
  kSVG1DOMPaintServer = 1035,
  kSVGSVGElementFragmentSVGView = 1036,
  kSVGSVGElementFragmentSVGViewElement = 1037,
  kPresentationConnectionClose = 1038,
  kSVG1DOMShape = 1039,
  kSVG1DOMText = 1040,
  kRTCPeerConnectionConstructorConstraints = 1041,
  kRTCPeerConnectionConstructorCompliant = 1042,
  kRTCPeerConnectionCreateOfferLegacyFailureCallback = 1044,
  kRTCPeerConnectionCreateOfferLegacyConstraints = 1045,
  kRTCPeerConnectionCreateOfferLegacyOfferOptions = 1046,
  kRTCPeerConnectionCreateOfferLegacyCompliant = 1047,
  kRTCPeerConnectionCreateAnswerLegacyFailureCallback = 1049,
  kRTCPeerConnectionCreateAnswerLegacyConstraints = 1050,
  kRTCPeerConnectionCreateAnswerLegacyCompliant = 1051,
  kRTCPeerConnectionSetLocalDescriptionLegacyNoSuccessCallback = 1052,
  kRTCPeerConnectionSetLocalDescriptionLegacyNoFailureCallback = 1053,
  kRTCPeerConnectionSetLocalDescriptionLegacyCompliant = 1054,
  kRTCPeerConnectionSetRemoteDescriptionLegacyNoSuccessCallback = 1055,
  kRTCPeerConnectionSetRemoteDescriptionLegacyNoFailureCallback = 1056,
  kRTCPeerConnectionSetRemoteDescriptionLegacyCompliant = 1057,
  kRTCPeerConnectionGetStatsLegacyNonCompliant = 1058,
  kNodeFilterIsFunction = 1059,
  kNodeFilterIsObject = 1060,
  kCSSSelectorInternalPseudoListBox = 1062,
  kCSSSelectorInternalMediaControlsOverlayCastButton = 1064,
  kCSSSelectorInternalPseudoSpatialNavigationFocus = 1065,
  kSameOriginTextScript = 1066,
  kSameOriginApplicationScript = 1067,
  kSameOriginOtherScript = 1068,
  kCrossOriginTextScript = 1069,
  kCrossOriginApplicationScript = 1070,
  kCrossOriginOtherScript = 1071,
  kSVG1DOMSVGTests = 1072,
  kDisableRemotePlaybackAttribute = 1074,
  kV8SloppyMode = 1075,
  kV8StrictMode = 1076,
  kV8StrongMode = 1077,
  kAudioNodeConnectToAudioNode = 1078,
  kAudioNodeConnectToAudioParam = 1079,
  kAudioNodeDisconnectFromAudioNode = 1080,
  kAudioNodeDisconnectFromAudioParam = 1081,
  kV8CSSFontFaceRule_Style_AttributeGetter = 1082,
  kSelectionCollapseNull = 1083,
  kSelectionSetBaseAndExtentNull = 1084,
  kV8SVGSVGElement_CreateSVGNumber_Method = 1085,
  kV8SVGSVGElement_CreateSVGLength_Method = 1086,
  kV8SVGSVGElement_CreateSVGAngle_Method = 1087,
  kV8SVGSVGElement_CreateSVGPoint_Method = 1088,
  kV8SVGSVGElement_CreateSVGMatrix_Method = 1089,
  kV8SVGSVGElement_CreateSVGRect_Method = 1090,
  kV8SVGSVGElement_CreateSVGTransform_Method = 1091,
  kV8SVGSVGElement_CreateSVGTransformFromMatrix_Method = 1092,
  kFormNameAccessForNonDescendantImageElement = 1093,
  kV8RegExpPrototypeStickyGetter = 1096,
  kV8RegExpPrototypeToString = 1097,
  kV8InputDeviceCapabilities_FiresTouchEvents_AttributeGetter = 1098,
  kDataElement = 1099,
  kTimeElement = 1100,
  kSVG1DOMUriReference = 1101,
  kSVG1DOMZoomAndPan = 1102,
  kV8SVGGraphicsElement_Transform_AttributeGetter = 1103,
  kMenuItemElement = 1104,
  kMenuItemCloseTag = 1105,
  kSVG1DOMMarkerElement = 1106,
  kSVG1DOMUseElement = 1107,
  kSVG1DOMMaskElement = 1108,
  kV8SVGAElement_Target_AttributeGetter = 1109,
  kV8SVGClipPathElement_ClipPathUnits_AttributeGetter = 1110,
  kSVG1DOMFitToViewBox = 1111,
  kSVG1DOMSVGElement = 1114,
  kSVG1DOMImageElement = 1115,
  kSVG1DOMForeignObjectElement = 1116,
  kAudioContextCreateIIRFilter = 1117,
  // The above items are available in M49 branch

  kCSSSelectorPseudoSlotted = 1118,
  kMediaDevicesEnumerateDevices = 1119,
  kEventComposedPath = 1123,
  kLinkHeaderPreload = 1124,
  kMouseWheelEvent = 1125,
  kWheelEvent = 1126,
  kMouseWheelAndWheelEvent = 1127,
  kBodyScrollsInAdditionToViewport = 1128,
  kDocumentDesignModeEnabeld = 1129,
  kContentEditableTrue = 1130,
  kContentEditableTrueOnHTML = 1131,
  kContentEditablePlainTextOnly = 1132,
  kV8RegExpPrototypeUnicodeGetter = 1133,
  kV8IntlV8Parse = 1134,
  kV8IntlPattern = 1135,
  kV8IntlResolved = 1136,
  kV8PromiseChain = 1137,
  kV8PromiseAccept = 1138,
  kV8PromiseDefer = 1139,
  kEventComposed = 1140,
  kGeolocationInsecureOriginIframe = 1141,
  kGeolocationSecureOriginIframe = 1142,
  kRequestMIDIAccessIframe_ObscuredByFootprinting = 1143,
  kGetUserMediaInsecureOriginIframe = 1144,
  kGetUserMediaSecureOriginIframe = 1145,
  kElementRequestPointerLockIframe = 1146,
  kNotificationAPIInsecureOriginIframe = 1147,
  kNotificationAPISecureOriginIframe = 1148,
  kWebSocket = 1149,
  kMediaStreamConstraintsNameValue = 1150,
  kMediaStreamConstraintsFromDictionary = 1151,
  kMediaStreamConstraintsConformant = 1152,
  kCSSSelectorIndirectAdjacent = 1153,
  kCreateImageBitmap = 1156,
  kPresentationConnectionConnectEventListener = 1157,
  kPresentationConnectionCloseEventListener = 1158,
  kPresentationConnectionTerminateEventListener = 1159,
  kDocumentCreateEventAnimationEvent = 1162,
  kDocumentCreateEventBeforeUnloadEvent = 1166,
  kDocumentCreateEventCompositionEvent = 1168,
  kDocumentCreateEventDragEvent = 1169,
  kDocumentCreateEventErrorEvent = 1170,
  kDocumentCreateEventFocusEvent = 1171,
  kDocumentCreateEventHashChangeEvent = 1172,
  kDocumentCreateEventMutationEvent = 1173,
  kDocumentCreateEventPageTransitionEvent = 1174,
  kDocumentCreateEventPopStateEvent = 1176,
  kDocumentCreateEventTextEvent = 1182,
  kDocumentCreateEventTransitionEvent = 1183,
  kDocumentCreateEventWheelEvent = 1184,
  kDocumentCreateEventTrackEvent = 1186,
  kDocumentCreateEventMutationEvents = 1188,
  kDocumentCreateEventSVGEvents = 1190,
  kDocumentCreateEventDeviceMotionEvent = 1195,
  kDocumentCreateEventDeviceOrientationEvent = 1196,
  kDocumentCreateEventIDBVersionChangeEvent = 1201,
  kDocumentCreateEventStorageEvent = 1221,
  kDocumentCreateEventWebGLContextEvent = 1224,
  kDocumentCreateEventCloseEvent = 1227,
  kDocumentCreateEventKeyboardEvents = 1228,
  kHTMLMediaElement = 1229,
  kHTMLMediaElementInDocument = 1230,
  kHTMLMediaElementControlsAttribute = 1231,
  kV8Animation_Oncancel_AttributeGetter = 1233,
  kV8Animation_Oncancel_AttributeSetter = 1234,
  kV8HTMLCommentInExternalScript = 1235,
  kV8HTMLComment = 1236,
  kV8SloppyModeBlockScopedFunctionRedefinition = 1237,
  kV8ForInInitializer = 1238,
  kV8Animation_Id_AttributeGetter = 1239,
  kV8Animation_Id_AttributeSetter = 1240,
  kApplicationCacheManifestSelectInsecureOrigin = 1245,
  kApplicationCacheManifestSelectSecureOrigin = 1246,
  kApplicationCacheAPIInsecureOrigin = 1247,
  kApplicationCacheAPISecureOrigin = 1248,
  // The above items are available in M50 branch

  kCSSAtRuleApply = 1249,  // Removed
  kCSSSelectorPseudoAny = 1250,
  kHTMLLabelElementControlForNonFormAssociatedElement = 1263,
  kHTMLMediaElementLoadNetworkEmptyNotPaused = 1265,
  kV8Window_WebkitSpeechGrammar_ConstructorGetter = 1267,
  kV8Window_WebkitSpeechGrammarList_ConstructorGetter = 1268,
  kV8Window_WebkitSpeechRecognition_ConstructorGetter = 1269,
  kV8Window_WebkitSpeechRecognitionError_ConstructorGetter = 1270,
  kV8Window_WebkitSpeechRecognitionEvent_ConstructorGetter = 1271,
  kV8Window_SpeechSynthesis_AttributeGetter = 1272,
  kV8IDBFactory_WebkitGetDatabaseNames_Method = 1273,
  kScriptPassesCSPDynamic = 1275,
  kCSPWithStrictDynamic = 1277,
  kScrollAnchored = 1278,
  kSVGCalcModeDiscrete = 1287,
  kSVGCalcModeLinear = 1288,
  kSVGCalcModePaced = 1289,
  kSVGCalcModeSpline = 1290,
  kFormSubmissionStarted = 1291,
  kFormValidationStarted = 1292,
  kFormValidationAbortedSubmission = 1293,
  kFormValidationShowedMessage = 1294,
  // The above items are available in M51 branch

  kV8Document_Images_AttributeGetter = 1297,
  kV8Document_Embeds_AttributeGetter = 1298,
  kV8Document_Plugins_AttributeGetter = 1299,
  kV8Document_Links_AttributeGetter = 1300,
  kV8Document_Forms_AttributeGetter = 1301,
  kV8Document_Scripts_AttributeGetter = 1302,
  kV8Document_Anchors_AttributeGetter = 1303,
  kV8Document_Applets_AttributeGetter = 1304,
  kMediaStreamTrackRemote = 1306,
  kV8Node_IsConnected_AttributeGetter = 1307,
  kShadowRootDelegatesFocus = 1308,
  kOBSOLETE_MixedShadowRootV0AndV1 = 1309,
  kFileAPINativeLineEndings = 1320,
  kPointerEventAttributeCount = 1321,
  kCompositedReplication = 1322,
  kV8DataTransferItem_WebkitGetAsEntry_Method = 1325,
  kV8HTMLInputElement_WebkitEntries_AttributeGetter = 1326,
  kEntry_Filesystem_AttributeGetter_IsolatedFileSystem = 1327,
  kEntry_GetMetadata_Method_IsolatedFileSystem = 1328,
  kEntry_MoveTo_Method_IsolatedFileSystem = 1329,
  kEntry_CopyTo_Method_IsolatedFileSystem = 1330,
  kEntry_Remove_Method_IsolatedFileSystem = 1331,
  kEntry_GetParent_Method_IsolatedFileSystem = 1332,
  kEntry_ToURL_Method_IsolatedFileSystem = 1333,
  kDuring_Microtask_Alert = 1334,
  kDuring_Microtask_Confirm = 1335,
  kDuring_Microtask_Print = 1336,
  kDuring_Microtask_Prompt = 1337,
  kDuring_Microtask_SyncXHR = 1338,
  kCredentialManagerGetReturnedCredential = 1342,
  kGeolocationInsecureOriginDeprecatedNotRemoved = 1343,
  kGeolocationInsecureOriginIframeDeprecatedNotRemoved = 1344,
  kProgressElementWithNoneAppearance = 1345,
  kProgressElementWithProgressBarAppearance = 1346,
  kPointerEventAddListenerCount = 1347,
  kCSSValueAppearanceNone = 1351,
  kCSSValueAppearanceNotNone = 1352,
  kCSSValueAppearanceOthers = 1353,
  kCSSValueAppearanceButton = 1354,
  kCSSValueAppearanceCheckbox = 1356,
  kCSSValueAppearanceMenulist = 1357,
  kCSSValueAppearanceMenulistButton = 1358,
  kCSSValueAppearanceListbox = 1359,
  kCSSValueAppearanceRadio = 1360,
  kCSSValueAppearanceSearchField = 1361,
  kCSSValueAppearanceTextField = 1362,
  kAudioContextCreatePannerAutomated = 1363,
  kPannerNodeSetPosition = 1364,
  kPannerNodeSetOrientation = 1365,
  kAudioListenerSetPosition = 1366,
  kAudioListenerSetOrientation = 1367,
  kIntersectionObserver_Constructor = 1368,
  kDurableStoragePersist = 1369,
  kDurableStoragePersisted = 1370,
  kDurableStorageEstimate = 1371,
  kOBSOLETE_CSSDeepCombinatorAndShadow = 1375,
  kOpacityWithPreserve3DQuirk = 1376,
  kCSSSelectorPseudoReadOnly = 1377,
  kCSSSelectorPseudoReadWrite = 1378,
  // The above items are available in M52 branch

  kCSSSelectorPseudoDefined = 1383,
  kRTCPeerConnectionAddIceCandidatePromise = 1384,
  kRTCPeerConnectionAddIceCandidateLegacy = 1385,
  kRTCIceCandidateDefaultSdpMLineIndex = 1386,
  kMediaStreamConstraintsOldAndNew = 1389,
  kV8ArrayProtectorDirtied = 1390,
  kV8ArraySpeciesModified = 1391,
  kV8ArrayPrototypeConstructorModified = 1392,
  kV8ArrayInstanceProtoModified = 1393,
  kV8ArrayInstanceConstructorModified = 1394,
  kV8LegacyFunctionDeclaration = 1395,
  kV8RegExpPrototypeSourceGetter = 1396,
  kV8RegExpPrototypeOldFlagGetter = 1397,
  kV8DecimalWithLeadingZeroInStrictMode = 1398,
  kGetUserMediaPrefixed = 1400,
  kGetUserMediaLegacy = 1401,
  kGetUserMediaPromise = 1402,
  kCSSFilterFunctionNoArguments = 1403,
  kV8LegacyDateParser = 1404,
  kOpenSearchInsecureOriginInsecureTarget = 1405,
  kOpenSearchInsecureOriginSecureTarget = 1406,
  kOpenSearchSecureOriginInsecureTarget = 1407,
  kOpenSearchSecureOriginSecureTarget = 1408,
  kRegisterProtocolHandlerSecureOrigin = 1409,
  kRegisterProtocolHandlerInsecureOrigin = 1410,
  kCrossOriginWindowAlert = 1411,
  kCrossOriginWindowConfirm = 1412,
  kCrossOriginWindowPrompt = 1413,
  kCrossOriginWindowPrint = 1414,
  kMediaStreamOnActive = 1415,
  kMediaStreamOnInactive = 1416,
  kAddEventListenerPassiveTrue = 1417,
  kAddEventListenerPassiveFalse = 1418,
  kCSPReferrerDirective = 1419,
  kElementRequestPointerLockInShadow = 1421,
  kShadowRootPointerLockElement = 1422,
  kOBSOLETE_DocumentPointerLockElementInV0Shadow = 1423,
  kTextAreaMaxLength = 1424,
  kTextAreaMinLength = 1425,
  kTopNavigationFromSubFrame = 1426,
  kPrefixedElementRequestFullscreenInShadow = 1427,
  kMediaSourceAbortRemove = 1428,
  kMediaSourceDurationTruncatingBuffered = 1429,
  kAudioContextCrossOriginIframe = 1430,
  // The above items are available in M53 branch

  kPointerEventSetCapture = 1431,
  kPointerEventDispatch = 1432,
  kMIDIMessageEventReceivedTime = 1433,
  kV8MediaStream_Active_AttributeGetter = 1435,
  kBeforeInstallPromptEvent = 1436,
  kBeforeInstallPromptEventUserChoice = 1437,
  kBeforeInstallPromptEventPreventDefault = 1438,
  kBeforeInstallPromptEventPrompt = 1439,
  kExecCommandAltersHTMLStructure = 1440,
  kSecureContextCheckPassed = 1441,
  kSecureContextCheckFailed = 1442,
  kSecureContextCheckForSandboxedOriginPassed = 1443,
  kSecureContextCheckForSandboxedOriginFailed = 1444,
  kV8DefineGetterOrSetterWouldThrow = 1445,
  kV8FunctionConstructorReturnedUndefined = 1446,
  kV8BroadcastChannel_Constructor = 1447,
  kV8BroadcastChannel_PostMessage_Method = 1448,
  kV8BroadcastChannel_Close_Method = 1449,
  kTouchStartFired = 1450,
  kMouseDownFired = 1451,
  kPointerDownFired = 1452,
  kPointerDownFiredForTouch = 1453,
  kPointerEventDispatchPointerDown = 1454,
  kSVGSMILBeginOrEndEventValue = 1455,
  kSVGSMILBeginOrEndSyncbaseValue = 1456,
  kSVGSMILElementInsertedAfterLoad = 1457,
  kV8VisualViewport_OffsetLeft_AttributeGetter = 1458,
  kV8VisualViewport_OffsetTop_AttributeGetter = 1459,
  kV8VisualViewport_PageLeft_AttributeGetter = 1460,
  kV8VisualViewport_PageTop_AttributeGetter = 1461,
  kV8VisualViewport_Width_AttributeGetter = 1462,
  kV8VisualViewport_Height_AttributeGetter = 1463,
  kV8VisualViewport_Scale_AttributeGetter = 1464,
  kVisualViewportScrollFired = 1465,
  kVisualViewportResizeFired = 1466,
  kNodeGetRootNode = 1467,
  kSlotChangeEventAddListener = 1468,
  kCSSValueAppearanceButtonForButton = 1471,
  kCSSValueAppearanceButtonForOtherButtons = 1472,
  kCSSValueAppearanceTextFieldForSearch = 1474,
  kCSSValueAppearanceTextFieldForTextField = 1475,
  kRTCPeerConnectionGetStats = 1476,
  kSVGSMILAnimationAppliedEffect = 1477,
  kPerformanceResourceTimingSizes = 1478,
  kEventSourceDocument = 1479,
  kEventSourceWorker = 1480,
  kSingleOriginInTimingAllowOrigin = 1481,
  kMultipleOriginsInTimingAllowOrigin = 1482,
  kStarInTimingAllowOrigin = 1483,
  kSVGSMILAdditiveAnimation = 1484,
  kOBSOLETE_SendBeaconWithNonSimpleContentType = 1485,
  kChromeLoadTimesRequestTime = 1486,
  kChromeLoadTimesStartLoadTime = 1487,
  kChromeLoadTimesCommitLoadTime = 1488,
  kChromeLoadTimesFinishDocumentLoadTime = 1489,
  kChromeLoadTimesFinishLoadTime = 1490,
  kChromeLoadTimesFirstPaintTime = 1491,
  kChromeLoadTimesFirstPaintAfterLoadTime = 1492,
  kChromeLoadTimesNavigationType = 1493,
  kChromeLoadTimesWasFetchedViaSpdy = 1494,
  kChromeLoadTimesWasNpnNegotiated = 1495,
  kChromeLoadTimesNpnNegotiatedProtocol = 1496,
  kChromeLoadTimesWasAlternateProtocolAvailable = 1497,
  kChromeLoadTimesConnectionInfo = 1498,
  kChromeLoadTimesUnknown = 1499,
  kSVGViewElement = 1500,
  kWebShareShare = 1501,
  kAuxclickAddListenerCount = 1502,
  kHTMLCanvasElement = 1503,
  kSVGSMILAnimationElementTiming = 1504,
  kSVGSMILBeginEndAnimationElement = 1505,
  kSVGSMILPausing = 1506,
  kSVGSMILCurrentTime = 1507,
  kHTMLBodyElementOnSelectionChangeAttribute = 1508,
  kUsbGetDevices = 1519,
  kUsbRequestDevice = 1520,
  kUsbDeviceOpen = 1521,
  kUsbDeviceClose = 1522,
  kUsbDeviceSelectConfiguration = 1523,
  kUsbDeviceClaimInterface = 1524,
  kUsbDeviceReleaseInterface = 1525,
  kUsbDeviceSelectAlternateInterface = 1526,
  kUsbDeviceControlTransferIn = 1527,
  kUsbDeviceControlTransferOut = 1528,
  kUsbDeviceClearHalt = 1529,
  kUsbDeviceTransferIn = 1530,
  kUsbDeviceTransferOut = 1531,
  kUsbDeviceIsochronousTransferIn = 1532,
  kUsbDeviceIsochronousTransferOut = 1533,
  kUsbDeviceReset = 1534,
  // The above items are available in M54 branch

  kPointerEnterLeaveFired = 1535,
  kPointerOverOutFired = 1536,
  kDraggableAttribute = 1539,
  kCleanScriptElementWithNonce = 1540,
  kPotentiallyInjectedScriptElementWithNonce = 1541,
  kPendingStylesheetAddedAfterBodyStarted = 1542,
  kUntrustedMouseDownEventDispatchedToSelect = 1543,
  kBlockedSniffingAudioToScript = 1544,
  kBlockedSniffingVideoToScript = 1545,
  kBlockedSniffingCSVToScript = 1546,
  kMetaRefresh = 1548,
  kMetaRefreshWhenCSPBlocksInlineScript = 1550,
  kMiddleClickAutoscrollStart = 1551,
  kRTCPeerConnectionCreateOfferOptionsOfferToReceive = 1553,
  kDragAndDropScrollStart = 1554,
  kPresentationConnectionListConnectionAvailableEventListener = 1555,
  kWebAudioAutoplayCrossOriginIframe = 1556,
  kVRGetDisplays = 1558,
  kXSSAuditorBlockedScript = 1581,
  kXSSAuditorBlockedEntirePage = 1582,
  kXSSAuditorDisabled = 1583,
  kXSSAuditorEnabledFilter = 1584,
  kXSSAuditorEnabledBlock = 1585,
  kXSSAuditorInvalid = 1586,
  kTextInputEventOnInput = 1589,
  kTextInputEventOnTextArea = 1590,
  kTextInputEventOnContentEditable = 1591,
  kTextInputEventOnNotNode = 1592,
  kWebkitBeforeTextInsertedOnInput = 1593,
  kWebkitBeforeTextInsertedOnTextArea = 1594,
  kWebkitBeforeTextInsertedOnContentEditable = 1595,
  kWebkitBeforeTextInsertedOnNotNode = 1596,
  kWebkitEditableContentChangedOnInput = 1597,
  kWebkitEditableContentChangedOnTextArea = 1598,
  kWebkitEditableContentChangedOnContentEditable = 1599,
  kWebkitEditableContentChangedOnNotNode = 1600,
  kV8NavigatorUserMediaError_ConstraintName_AttributeGetter = 1601,
  kV8HTMLMediaElement_SrcObject_AttributeGetter = 1602,
  kV8HTMLMediaElement_SrcObject_AttributeSetter = 1603,
  kCreateObjectURLBlob = 1604,
  kCreateObjectURLMediaSource = 1605,
  kCreateObjectURLMediaStream = 1606,
  kLongTaskObserver = 1615,
  kCSSOffsetInEffect = 1617,
  // The above items are available in M55 branch

  kVRGetDisplaysInsecureOrigin = 1618,
  kVRRequestPresent = 1619,
  kVRRequestPresentInsecureOrigin = 1620,
  kVRDeprecatedFieldOfView = 1621,
  kVideoInCanvas = 1622,
  kHiddenAutoplayedVideoInCanvas = 1623,
  kOffscreenCanvas = 1624,
  kGamepadPose = 1625,
  kGamepadHand = 1626,
  kGamepadDisplayId = 1627,
  kGamepadButtonTouched = 1628,
  kGamepadPoseHasOrientation = 1629,
  kGamepadPoseHasPosition = 1630,
  kGamepadPosePosition = 1631,
  kGamepadPoseLinearVelocity = 1632,
  kGamepadPoseLinearAcceleration = 1633,
  kGamepadPoseOrientation = 1634,
  kGamepadPoseAngularVelocity = 1635,
  kGamepadPoseAngularAcceleration = 1636,
  kV8RTCDataChannel_MaxRetransmitTime_AttributeGetter = 1638,
  kV8RTCDataChannel_MaxRetransmits_AttributeGetter = 1639,
  kV8RTCDataChannel_Reliable_AttributeGetter = 1640,
  kV8RTCPeerConnection_AddStream_Method = 1641,
  kV8RTCPeerConnection_CreateDTMFSender_Method = 1642,
  kV8RTCPeerConnection_GetLocalStreams_Method = 1643,
  kV8RTCPeerConnection_GetRemoteStreams_Method = 1644,
  kV8RTCPeerConnection_RemoveStream_Method = 1646,
  kRTCPeerConnectionCreateDataChannelMaxRetransmitTime = 1648,
  kRTCPeerConnectionCreateDataChannelMaxRetransmits = 1649,
  kAudioContextCreateConstantSource = 1650,
  kWebAudioConstantSourceNode = 1651,
  kBlinkMacSystemFont = 1654,
  kRTCIceServerURL = 1656,
  kRTCIceServerURLs = 1657,
  kOffscreenCanvasTransferToImageBitmap2D = 1658,
  kOffscreenCanvasTransferToImageBitmapWebGL = 1659,
  kOffscreenCanvasCommit2D = 1660,
  kOffscreenCanvasCommitWebGL = 1661,
  kRTCConfigurationIceTransportPolicy = 1662,
  kRTCConfigurationIceTransports = 1664,
  kOBSOLETE_DocumentFullscreenElementInV0Shadow = 1665,
  kScriptWithCSPBypassingSchemeParserInserted = 1666,
  kScriptWithCSPBypassingSchemeNotParserInserted = 1667,
  kDocumentCreateElement2ndArgStringHandling = 1668,
  kV8MediaRecorder_Start_Method = 1669,
  kWebBluetoothRequestDevice = 1670,
  kUnitlessPerspectiveInPerspectiveProperty = 1671,
  kUnitlessPerspectiveInTransformProperty = 1672,
  kV8RTCSessionDescription_Type_AttributeGetter = 1673,
  kV8RTCSessionDescription_Type_AttributeSetter = 1674,
  kV8RTCSessionDescription_Sdp_AttributeGetter = 1675,
  kV8RTCSessionDescription_Sdp_AttributeSetter = 1676,
  kRTCSessionDescriptionInitNoType = 1677,
  kRTCSessionDescriptionInitNoSdp = 1678,
  kHTMLMediaElementPreloadForcedMetadata = 1679,
  kGenericSensorStart = 1680,
  kGenericSensorStop = 1681,
  kTouchEventPreventedNoTouchAction = 1682,
  kTouchEventPreventedForcedDocumentPassiveNoTouchAction = 1683,
  kV8Event_StopPropagation_Method = 1684,
  kV8Event_StopImmediatePropagation_Method = 1685,
  kImageCaptureConstructor = 1686,
  kV8Document_RootScroller_AttributeGetter = 1687,
  kV8Document_RootScroller_AttributeSetter = 1688,
  kCustomElementRegistryDefine = 1689,
  kLinkHeaderServiceWorker = 1690,
  // The above items are available in M56 branch.

  kCSSFlexibleBox = 1692,
  kCSSGridLayout = 1693,
  kFullscreenAllowedByOrientationChange = 1696,
  kServiceWorkerRespondToNavigationRequestWithRedirectedResponse = 1697,
  kV8AudioContext_Constructor = 1698,
  kV8OfflineAudioContext_Constructor = 1699,
  kAppInstalledEventAddListener = 1700,
  kAudioContextGetOutputTimestamp = 1701,
  kV8MediaStreamAudioDestinationNode_Constructor = 1702,
  kV8AnalyserNode_Constructor = 1703,
  kV8AudioBuffer_Constructor = 1704,
  kV8AudioBufferSourceNode_Constructor = 1705,
  kV8AudioProcessingEvent_Constructor = 1706,
  kV8BiquadFilterNode_Constructor = 1707,
  kV8ChannelMergerNode_Constructor = 1708,
  kV8ChannelSplitterNode_Constructor = 1709,
  kV8ConstantSourceNode_Constructor = 1710,
  kV8ConvolverNode_Constructor = 1711,
  kV8DelayNode_Constructor = 1712,
  kV8DynamicsCompressorNode_Constructor = 1713,
  kV8GainNode_Constructor = 1714,
  kV8IIRFilterNode_Constructor = 1715,
  kV8MediaElementAudioSourceNode_Constructor = 1716,
  kV8MediaStreamAudioSourceNode_Constructor = 1717,
  kV8OfflineAudioCompletionEvent_Constructor = 1718,
  kV8OscillatorNode_Constructor = 1719,
  kV8PannerNode_Constructor = 1720,
  kV8PeriodicWave_Constructor = 1721,
  kV8StereoPannerNode_Constructor = 1722,
  kV8WaveShaperNode_Constructor = 1723,
  kV8Headers_GetAll_Method = 1724,
  kNavigatorVibrateEngagementNone = 1725,
  kNavigatorVibrateEngagementMinimal = 1726,
  kNavigatorVibrateEngagementLow = 1727,
  kNavigatorVibrateEngagementMedium = 1728,
  kNavigatorVibrateEngagementHigh = 1729,
  kNavigatorVibrateEngagementMax = 1730,
  kAlertEngagementNone = 1731,
  kAlertEngagementMinimal = 1732,
  kAlertEngagementLow = 1733,
  kAlertEngagementMedium = 1734,
  kAlertEngagementHigh = 1735,
  kAlertEngagementMax = 1736,
  kConfirmEngagementNone = 1737,
  kConfirmEngagementMinimal = 1738,
  kConfirmEngagementLow = 1739,
  kConfirmEngagementMedium = 1740,
  kConfirmEngagementHigh = 1741,
  kConfirmEngagementMax = 1742,
  kPromptEngagementNone = 1743,
  kPromptEngagementMinimal = 1744,
  kPromptEngagementLow = 1745,
  kPromptEngagementMedium = 1746,
  kPromptEngagementHigh = 1747,
  kPromptEngagementMax = 1748,
  kTopNavInSandbox = 1749,
  kTopNavInSandboxWithoutGesture = 1750,
  kTopNavInSandboxWithPerm = 1751,
  kTopNavInSandboxWithPermButNoGesture = 1752,
  kReferrerPolicyHeader = 1753,
  kHTMLAnchorElementReferrerPolicyAttribute = 1754,
  kHTMLIFrameElementReferrerPolicyAttribute = 1755,
  kHTMLImageElementReferrerPolicyAttribute = 1756,
  kHTMLLinkElementReferrerPolicyAttribute = 1757,
  kBaseElement = 1758,
  kBaseWithCrossOriginHref = 1759,
  kBaseWithDataHref = 1760,
  kBaseWithNewlinesInTarget = 1761,
  kBaseWithOpenBracketInTarget = 1762,
  kBaseWouldBeBlockedByDefaultSrc = 1763,
  kV8AssigmentExpressionLHSIsCallInSloppy = 1764,
  kV8AssigmentExpressionLHSIsCallInStrict = 1765,
  kV8PromiseConstructorReturnedUndefined = 1766,
  kFormSubmittedWithUnclosedFormControl = 1767,
  kScrollbarUseVerticalScrollbarButton = 1777,
  kScrollbarUseVerticalScrollbarTrack = 1779,
  kScrollbarUseHorizontalScrollbarButton = 1780,
  kScrollbarUseHorizontalScrollbarTrack = 1782,
  kHTMLTableCellElementColspan = 1783,
  kHTMLTableCellElementColspanGreaterThan1000 = 1784,
  kHTMLTableCellElementColspanGreaterThan8190 = 1785,
  kSelectionAddRangeIntersect = 1786,
  kPostMessageFromInsecureToSecureToplevel = 1787,
  // The above items are available in M57 branch.

  kV8MediaSession_Metadata_AttributeGetter = 1788,
  kV8MediaSession_Metadata_AttributeSetter = 1789,
  kV8MediaSession_PlaybackState_AttributeGetter = 1790,
  kV8MediaSession_PlaybackState_AttributeSetter = 1791,
  kV8MediaSession_SetActionHandler_Method = 1792,
  kAudioParamCancelAndHoldAtTime = 1797,
  kCSSValueUserModifyReadOnly = 1798,
  kCSSValueUserModifyReadWrite = 1799,
  kCSSValueUserModifyReadWritePlaintextOnly = 1800,
  kCSSValueOnDemand = 1802,
  kServiceWorkerNavigationPreload = 1803,
  kFullscreenRequestWithPendingElement = 1804,
  kHTMLIFrameElementAllowfullscreenAttributeSetAfterContentLoad = 1805,
  kPointerEventSetCaptureOutsideDispatch = 1806,
  kNotificationPermissionRequestedInsecureOrigin = 1807,
  kV8DeprecatedStorageInfo_QueryUsageAndQuota_Method = 1808,
  kV8DeprecatedStorageInfo_RequestQuota_Method = 1809,
  kV8DeprecatedStorageQuota_QueryUsageAndQuota_Method = 1810,
  kV8DeprecatedStorageQuota_RequestQuota_Method = 1811,
  kV8FileReaderSync_Constructor = 1812,
  kV8HTMLVideoElement_Poster_AttributeGetter = 1815,
  kV8HTMLVideoElement_Poster_AttributeSetter = 1816,
  kNotificationPermissionRequestedIframe = 1817,
  kRtcpMuxPolicyNegotiate = 1823,
  kDOMClobberedVariableAccessed = 1824,
  kHTMLDocumentCreateProcessingInstruction = 1825,
  kFetchResponseConstructionWithStream = 1826,
  kLocationOrigin = 1827,
  kCanvas2DFilter = 1830,
  kCanvas2DImageSmoothingQuality = 1831,
  kCanvasToBlob = 1832,
  kCanvasToDataURL = 1833,
  kOffscreenCanvasConvertToBlob = 1834,
  kSVGInCanvas2D = 1835,
  kSVGInWebGL = 1836,
  kSelectionFuncionsChangeFocus = 1837,
  kHTMLObjectElementGetter = 1838,
  kHTMLObjectElementSetter = 1839,
  kHTMLEmbedElementGetter = 1840,
  kHTMLEmbedElementSetter = 1841,
  kTransformUsesBoxSizeOnSVG = 1842,
  // The above items are available in M58 branch.

  kScrollByKeyboardArrowKeys = 1843,
  kScrollByKeyboardPageUpDownKeys = 1844,
  kScrollByKeyboardHomeEndKeys = 1845,
  kScrollByKeyboardSpacebarKey = 1846,
  kScrollByTouch = 1847,
  kScrollByWheel = 1848,
  kScheduledActionIgnored = 1849,
  kGetCanvas2DContextAttributes = 1850,
  kV8HTMLInputElement_Capture_AttributeGetter = 1851,
  kV8HTMLInputElement_Capture_AttributeSetter = 1852,
  kHTMLMediaElementControlsListAttribute = 1853,
  kHTMLMediaElementControlsListNoDownload = 1854,
  kHTMLMediaElementControlsListNoFullscreen = 1855,
  kHTMLMediaElementControlsListNoRemotePlayback = 1856,
  kPointerEventClickRetargetCausedByCapture = 1857,
  kVRDisplayDisplayName = 1861,
  kVREyeParametersOffset = 1862,
  kVRPoseLinearVelocity = 1863,
  kVRPoseLinearAcceleration = 1864,
  kVRPoseAngularVelocity = 1865,
  kVRPoseAngularAcceleration = 1866,
  kCSSOverflowPaged = 1867,
  kHTMLTableElementPresentationAttributeBackground = 1869,
  kV8Navigator_GetInstalledRelatedApps_Method = 1870,
  kNamedAccessOnWindow_ChildBrowsingContext = 1871,
  kNamedAccessOnWindow_ChildBrowsingContext_CrossOriginNameMismatch = 1872,
  kV0CustomElementsRegisterHTMLCustomTag = 1873,
  kV0CustomElementsRegisterHTMLTypeExtension = 1874,
  kV0CustomElementsRegisterSVGElement = 1875,
  kV0CustomElementsCreateCustomTagElement = 1877,
  kV0CustomElementsCreateTypeExtensionElement = 1878,
  kV0CustomElementsConstruct = 1879,
  kV8IDBObserver_Observe_Method = 1880,
  kV8IDBObserver_Unobserve_Method = 1881,
  kWebBluetoothRemoteCharacteristicGetDescriptor = 1882,
  kWebBluetoothRemoteCharacteristicGetDescriptors = 1883,
  kWebBluetoothRemoteCharacteristicReadValue = 1884,
  kWebBluetoothRemoteCharacteristicWriteValue = 1885,
  kWebBluetoothRemoteCharacteristicStartNotifications = 1886,
  kWebBluetoothRemoteCharacteristicStopNotifications = 1887,
  kWebBluetoothRemoteDescriptorReadValue = 1888,
  kWebBluetoothRemoteDescriptorWriteValue = 1889,
  kWebBluetoothRemoteServerConnect = 1890,
  kWebBluetoothRemoteServerDisconnect = 1891,
  kWebBluetoothRemoteServerGetPrimaryService = 1892,
  kWebBluetoothRemoteServerGetPrimaryServices = 1893,
  kWebBluetoothRemoteServiceGetCharacteristic = 1894,
  kWebBluetoothRemoteServiceGetCharacteristics = 1895,
  kOBSOLETE_HTMLContentElement = 1896,
  kOBSOLETE_HTMLShadowElement = 1897,
  kHTMLSlotElement = 1898,
  kAccelerometerConstructor = 1899,
  kAbsoluteOrientationSensorConstructor = 1900,
  kAmbientLightSensorConstructor = 1901,
  kGenericSensorOnActivate = 1902,
  kGenericSensorOnChange = 1903,
  kGenericSensorOnError = 1904,
  kGenericSensorActivated = 1905,
  kGyroscopeConstructor = 1906,
  kMagnetometerConstructor = 1907,
  kOrientationSensorPopulateMatrix = 1908,
  kWindowOpenWithInvalidURL = 1909,
  kCrossOriginMainFrameNulledNameAccessed = 1910,
  kMenuItemElementIconAttribute = 1911,
  kWebkitCSSMatrixSetMatrixValue = 1912,
  kWebkitCSSMatrixConstructFromString = 1913,
  kCanRequestURLHTTPContainingNewline = 1914,
  kGetGamepads = 1916,
  kMediaStreamConstraintsAudio = 1918,
  kMediaStreamConstraintsAudioUnconstrained = 1919,
  kMediaStreamConstraintsVideo = 1920,
  kMediaStreamConstraintsVideoUnconstrained = 1921,
  kMediaStreamConstraintsWidth = 1922,
  kMediaStreamConstraintsHeight = 1923,
  kMediaStreamConstraintsAspectRatio = 1924,
  kMediaStreamConstraintsFrameRate = 1925,
  kMediaStreamConstraintsFacingMode = 1926,
  kMediaStreamConstraintsVolume = 1927,
  kMediaStreamConstraintsSampleRate = 1928,
  kMediaStreamConstraintsSampleSize = 1929,
  kMediaStreamConstraintsEchoCancellation = 1930,
  kMediaStreamConstraintsLatency = 1931,
  kMediaStreamConstraintsChannelCount = 1932,
  kMediaStreamConstraintsDeviceIdAudio = 1933,
  kMediaStreamConstraintsDeviceIdVideo = 1934,
  kMediaStreamConstraintsDisableLocalEcho = 1935,
  kMediaStreamConstraintsGroupIdAudio = 1936,
  kMediaStreamConstraintsGroupIdVideo = 1937,
  kMediaStreamConstraintsVideoKind = 1938,
  kMediaStreamConstraintsMediaStreamSourceAudio = 1943,
  kMediaStreamConstraintsMediaStreamSourceVideo = 1944,
  kMediaStreamConstraintsRenderToAssociatedSink = 1945,
  kMediaStreamConstraintsHotwordEnabled = 1946,
  kMediaStreamConstraintsGoogEchoCancellation = 1947,
  kMediaStreamConstraintsGoogExperimentalEchoCancellation = 1948,
  kMediaStreamConstraintsGoogAutoGainControl = 1949,
  kMediaStreamConstraintsGoogExperimentalAutoGainControl = 1950,
  kMediaStreamConstraintsGoogNoiseSuppression = 1951,
  kMediaStreamConstraintsGoogHighpassFilter = 1952,
  kMediaStreamConstraintsGoogTypingNoiseDetection = 1953,
  kMediaStreamConstraintsGoogExperimentalNoiseSuppression = 1954,
  kMediaStreamConstraintsGoogBeamforming = 1955,
  kMediaStreamConstraintsGoogArrayGeometry = 1956,
  kMediaStreamConstraintsGoogAudioMirroring = 1957,
  kMediaStreamConstraintsGoogDAEchoCancellation = 1958,
  kMediaStreamConstraintsGoogNoiseReduction = 1959,
  // The above items are available in M59 branch.

  kViewportFixedPositionUnderFilter = 1961,
  kRequestMIDIAccessWithSysExOption_ObscuredByFootprinting = 1962,
  kRequestMIDIAccessIframeWithSysExOption_ObscuredByFootprinting = 1963,
  kGamepadAxes = 1964,
  kGamepadButtons = 1965,
  kDispatchMouseEventOnDisabledFormControl = 1967,
  kElementNameDOMInvalidHTMLParserValid = 1968,
  kElementNameDOMValidHTMLParserInvalid = 1969,
  kGATTServerDisconnectedEvent = 1970,
  kAnchorClickDispatchForNonConnectedNode = 1971,
  kHTMLParseErrorNestedForm = 1972,
  kFontShapingNotDefGlyphObserved = 1973,
  kPostMessageOutgoingWouldBeBlockedByConnectSrc = 1974,
  kPostMessageIncomingWouldBeBlockedByConnectSrc = 1975,
  kCrossOriginPropertyAccess = 1977,
  kCrossOriginPropertyAccessFromOpener = 1978,
  kCredentialManagerCreate = 1979,
  kFieldEditInSecureContext = 1981,
  kFieldEditInNonSecureContext = 1982,
  kCredentialManagerGetMediationRequired = 1984,
  kNetInfoRtt = 1989,
  kNetInfoDownlink = 1990,
  kOBSOLETE_ShapeDetection_BarcodeDetectorConstructor = 1991,
  kOBSOLETE_ShapeDetection_FaceDetectorConstructor = 1992,
  kOBSOLETE_ShapeDetection_TextDetectorConstructor = 1993,
  kInertAttribute = 1995,
  kPluginInstanceAccessFromIsolatedWorld = 1996,
  kPluginInstanceAccessFromMainWorld = 1997,
  kShowModalForElementInFullscreenStack = 2000,
  kThreeValuedPositionBackground = 2001,
  kUnitlessZeroAngleFilter = 2007,
  kUnitlessZeroAngleGradient = 2008,
  kUnitlessZeroAngleTransform = 2010,
  kCredentialManagerPreventSilentAccess = 2012,
  kNetInfoEffectiveType = 2013,
  kV8SpeechRecognition_Start_Method = 2014,
  kTableRowDirectionDifferentFromTable = 2015,
  kTableSectionDirectionDifferentFromTable = 2016,
  // The above items are available in M60 branch.

  kClientHintsDeviceMemory = 2017,
  kCSSRegisterProperty = 2018,
  kRelativeOrientationSensorConstructor = 2019,
  kSmoothScrollJSInterventionActivated = 2020,
  kBudgetAPIGetCost = 2021,
  kBudgetAPIGetBudget = 2022,
  kCrossOriginMainFrameNulledNonEmptyNameAccessed = 2023,
  kDocumentDomainSetWithNonDefaultPort = 2025,
  kDocumentDomainSetWithDefaultPort = 2026,
  kFeaturePolicyHeader = 2027,
  kFeaturePolicyAllowAttribute = 2028,
  kMIDIPortOpen = 2029,
  kMIDIOutputSend = 2030,
  kMIDIMessageEvent = 2031,
  kFetchEventIsReload = 2032,
  kServiceWorkerClientFrameType = 2033,
  kQuirksModeDocument = 2034,
  kLimitedQuirksModeDocument = 2035,
  kEncryptedMediaCrossOriginIframe = 2036,
  kCSSSelectorWebkitMediaControls = 2037,
  kCSSSelectorWebkitMediaControlsOverlayEnclosure = 2038,
  kCSSSelectorWebkitMediaControlsOverlayPlayButton = 2039,
  kCSSSelectorWebkitMediaControlsEnclosure = 2040,
  kCSSSelectorWebkitMediaControlsPanel = 2041,
  kCSSSelectorWebkitMediaControlsPlayButton = 2042,
  kCSSSelectorWebkitMediaControlsCurrentTimeDisplay = 2043,
  kCSSSelectorWebkitMediaControlsTimeRemainingDisplay = 2044,
  kCSSSelectorWebkitMediaControlsTimeline = 2045,
  kCSSSelectorWebkitMediaControlsTimelineContainer = 2046,
  kCSSSelectorWebkitMediaControlsMuteButton = 2047,
  kCSSSelectorWebkitMediaControlsVolumeSlider = 2048,
  kCSSSelectorWebkitMediaControlsFullscreenButton = 2049,
  kCSSSelectorWebkitMediaControlsToggleClosedCaptionsButton = 2050,
  kLinearAccelerationSensorConstructor = 2051,
  kReportUriMultipleEndpoints = 2052,
  kReportUriSingleEndpoint = 2053,
  kV8ConstructorNonUndefinedPrimitiveReturn = 2054,
  kMediaSourceKeyframeTimeGreaterThanDependant = 2060,
  kMediaSourceMuxedSequenceMode = 2061,
  kPrepareModuleScript = 2062,
  // The above items are available as of the M61 branch.

  kPresentationRequestStartSecureOrigin = 2063,
  kPresentationRequestStartInsecureOrigin = 2064,
  kPersistentClientHintHeader = 2065,
  kStyleSheetListNonNullAnonymousNamedGetter = 2066,
  kARIAActiveDescendantAttribute = 2069,
  kARIAAtomicAttribute = 2070,
  kARIAAutocompleteAttribute = 2071,
  kARIABusyAttribute = 2072,
  kARIACheckedAttribute = 2073,
  kARIAColCountAttribute = 2074,
  kARIAColIndexAttribute = 2075,
  kARIAColSpanAttribute = 2076,
  kARIAControlsAttribute = 2077,
  kARIACurrentAttribute = 2078,
  kARIADescribedByAttribute = 2079,
  kARIADetailsAttribute = 2080,
  kARIADisabledAttribute = 2081,
  kARIADropEffectAttribute = 2082,
  kARIAErrorMessageAttribute = 2083,
  kARIAExpandedAttribute = 2084,
  kARIAFlowToAttribute = 2085,
  kARIAGrabbedAttribute = 2086,
  kARIAHasPopupAttribute = 2087,
  kARIAHiddenAttribute = 2089,
  kARIAInvalidAttribute = 2090,
  kARIAKeyShortcutsAttribute = 2091,
  kARIALabelAttribute = 2092,
  kARIALabeledByAttribute = 2093,
  kARIALabelledByAttribute = 2094,
  kARIALevelAttribute = 2095,
  kARIALiveAttribute = 2096,
  kARIAModalAttribute = 2097,
  kARIAMultilineAttribute = 2098,
  kARIAMultiselectableAttribute = 2099,
  kARIAOrientationAttribute = 2100,
  kARIAOwnsAttribute = 2101,
  kARIAPlaceholderAttribute = 2102,
  kARIAPosInSetAttribute = 2103,
  kARIAPressedAttribute = 2104,
  kARIAReadOnlyAttribute = 2105,
  kARIARelevantAttribute = 2106,
  kARIARequiredAttribute = 2107,
  kARIARoleDescriptionAttribute = 2108,
  kARIARowCountAttribute = 2109,
  kARIARowIndexAttribute = 2110,
  kARIARowSpanAttribute = 2111,
  kARIASelectedAttribute = 2112,
  kARIASetSizeAttribute = 2113,
  kARIASortAttribute = 2114,
  kARIAValueMaxAttribute = 2115,
  kARIAValueMinAttribute = 2116,
  kARIAValueNowAttribute = 2117,
  kARIAValueTextAttribute = 2118,
  kV8LabeledExpressionStatement = 2119,
  kNavigatorDeviceMemory = 2121,
  kFixedWidthTableDistributionChanged = 2122,
  kWebkitBoxLayout = 2123,
  kWebkitBoxLayoutHorizontal = 2124,
  kWebkitBoxLayoutVertical = 2125,
  kWebkitBoxAlignNotInitial = 2126,
  kWebkitBoxDirectionNotInitial = 2127,
  kWebkitBoxLinesNotInitial = 2128,
  kWebkitBoxPackNotInitial = 2129,
  kWebkitBoxChildFlexNotInitial = 2130,
  kWebkitBoxChildFlexGroupNotInitial = 2131,
  kWebkitBoxChildOrdinalGroupNotInitial = 2132,
  kWebkitBoxNotDefaultOrder = 2133,
  kWebkitBoxNoChildren = 2134,
  kWebkitBoxOneChild = 2135,
  kWebkitBoxOneChildIsLayoutBlockFlowInline = 2136,
  kWebkitBoxManyChildren = 2137,
  kWebkitBoxLineClamp = 2138,
  kWebkitBoxLineClampPercentage = 2139,
  kWebkitBoxLineClampNoChildren = 2140,
  kWebkitBoxLineClampOneChild = 2141,
  kWebkitBoxLineClampOneChildIsLayoutBlockFlowInline = 2142,
  kWebkitBoxLineClampManyChildren = 2143,
  kWebkitBoxLineClampDoesSomething = 2144,
  // The above items are available as of the M62 branch.

  kFeaturePolicyAllowAttributeDeprecatedSyntax = 2145,
  kSuppressHistoryEntryWithoutUserGesture = 2146,
  kPerformanceServerTiming = 2157,
  kAnimationSetPlaybackRateCompensatorySeek = 2162,
  kOBSOLETE_DeepCombinatorInStaticProfile = 2163,
  kOBSOLETE_PseudoShadowInStaticProfile = 2164,
  kSchemeBypassesCSP = 2165,
  kInnerSchemeBypassesCSP = 2166,
  kSameOriginApplicationOctetStream = 2167,
  kSameOriginApplicationXml = 2168,
  kSameOriginTextHtml = 2169,
  kSameOriginTextPlain = 2170,
  kSameOriginTextXml = 2171,
  kCrossOriginApplicationOctetStream = 2172,
  kCrossOriginApplicationXml = 2173,
  kCrossOriginTextHtml = 2174,
  kCrossOriginTextPlain = 2175,
  kCrossOriginTextXml = 2176,
  // The above items are available as of the M63 branch.

  kPerformanceObserverForWindow = 2188,
  kPerformanceObserverForWorker = 2189,
  kPaintTimingObserved = 2190,
  kPaintTimingRequested = 2191,
  kHTMLMediaElementMediaPlaybackRateOutOfRange = 2192,
  kCookieSet = 2194,
  kCookieGet = 2195,
  kGeolocationDisabledByFeaturePolicy = 2196,
  kEncryptedMediaDisabledByFeaturePolicy = 2197,
  kBatteryStatusGetBattery = 2198,
  kBatteryStatusInsecureOrigin = 2199,
  kBatteryStatusCrossOrigin = 2200,
  kBatteryStatusSameOriginABA = 2201,
  kHasIDClassTagAttribute = 2203,
  kHasBeforeOrAfterPseudoElement = 2204,
  kShapeOutsideMaybeAffectedInlineSize = 2205,
  kShapeOutsideMaybeAffectedInlinePosition = 2206,
  kGamepadVibrationActuator = 2207,
  kMicrophoneDisabledByFeaturePolicyEstimate = 2208,
  kCameraDisabledByFeaturePolicyEstimate = 2209,
  kMidiDisabledByFeaturePolicy = 2210,
  kGeolocationGetCurrentPosition = 2214,
  kGeolocationWatchPosition = 2215,
  kNetInfoSaveData = 2217,
  kV8Element_GetClientRects_Method = 2218,
  kV8Element_GetBoundingClientRect_Method = 2219,
  kV8Range_GetClientRects_Method = 2220,
  kV8Range_GetBoundingClientRect_Method = 2221,
  kV8ErrorCaptureStackTrace = 2222,
  kV8ErrorPrepareStackTrace = 2223,
  kV8ErrorStackTraceLimit = 2224,
  kPaintWorklet = 2225,
  kDocumentPageHideRegistered = 2226,
  kDocumentPageHideFired = 2227,
  kDocumentPageShowRegistered = 2228,
  kDocumentPageShowFired = 2229,
  kReplaceCharsetInXHR = 2230,
  kLinkRelModulePreload = 2232,
  kCSPWithUnsafeEval = 2236,
  kWebAssemblyInstantiation = 2237,
  kV8IndexAccessor = 2238,
  kV8MediaCapabilities_DecodingInfo_Method = 2239,
  kV8MediaCapabilities_EncodingInfo_Method = 2240,
  kV8MediaCapabilitiesInfo_Supported_AttributeGetter = 2241,
  kV8MediaCapabilitiesInfo_Smooth_AttributeGetter = 2242,
  kV8MediaCapabilitiesInfo_PowerEfficient_AttributeGetter = 2243,
  kOBSOLETE_WindowEventInV0ShadowTree = 2244,
  kWindowOpenRealmMismatch = 2247,
  kGridRowTrackPercentIndefiniteHeight = 2248,
  kVRGetDisplaysSupportsPresent = 2249,
  kDuplicatedAttribute = 2250,
  kDuplicatedAttributeForExecutedScript = 2251,
  kV8RTCPeerConnection_GetSenders_Method = 2252,
  kV8RTCPeerConnection_GetReceivers_Method = 2253,
  kV8RTCPeerConnection_AddTrack_Method = 2254,
  kV8RTCPeerConnection_RemoveTrack_Method = 2255,
  kLocalCSSFile = 2256,
  kLocalCSSFileExtensionRejected = 2257,
  kUserMediaDisableHardwareNoiseSuppression = 2258,
  // The above items are available as of the M64 branch.

  kCertificateTransparencyRequiredErrorOnResourceLoad = 2259,
  kCSSSelectorPseudoWebkitAnyLink = 2260,
  kAudioWorkletAddModule = 2261,
  kAudioWorkletGlobalScopeRegisterProcessor = 2262,
  kAudioWorkletNodeConstructor = 2263,
  kHTMLMediaElementEmptyLoadWithFutureData = 2264,
  kCSSValueDisplayContents = 2265,
  kCSSSelectorPseudoAnyLink = 2266,
  kFileAccessedCache = 2267,
  kFileAccessedCookies = 2268,
  kFileAccessedDatabase = 2269,
  kFileAccessedFileSystem = 2270,
  kFileAccessedLocalStorage = 2271,
  kFileAccessedLocks = 2272,
  kFileAccessedServiceWorker = 2273,
  kFileAccessedSessionStorage = 2274,
  kFileAccessedSharedWorker = 2275,
  kV8MediaKeys_GetStatusForPolicy_Method = 2276,
  kV8DeoptimizerDisableSpeculation = 2277,
  kCSSSelectorCue = 2278,
  kCSSSelectorWebkitCalendarPickerIndicator = 2279,
  kCSSSelectorWebkitClearButton = 2280,
  kCSSSelectorWebkitColorSwatch = 2281,
  kCSSSelectorWebkitColorSwatchWrapper = 2282,
  kCSSSelectorWebkitDateAndTimeValue = 2283,
  kCSSSelectorWebkitDatetimeEdit = 2284,
  kCSSSelectorWebkitDatetimeEditAmpmField = 2285,
  kCSSSelectorWebkitDatetimeEditDayField = 2286,
  kCSSSelectorWebkitDatetimeEditFieldsWrapper = 2287,
  kCSSSelectorWebkitDatetimeEditHourField = 2288,
  kCSSSelectorWebkitDatetimeEditMillisecondField = 2289,
  kCSSSelectorWebkitDatetimeEditMinuteField = 2290,
  kCSSSelectorWebkitDatetimeEditMonthField = 2291,
  kCSSSelectorWebkitDatetimeEditSecondField = 2292,
  kCSSSelectorWebkitDatetimeEditText = 2293,
  kCSSSelectorWebkitDatetimeEditWeekField = 2294,
  kCSSSelectorWebkitDatetimeEditYearField = 2295,
  kCSSSelectorWebkitDetailsMarker = 2296,
  kCSSSelectorWebkitFileUploadButton = 2297,
  kCSSSelectorWebkitInnerSpinButton = 2298,
  kCSSSelectorWebkitInputPlaceholder = 2299,
  kCSSSelectorWebkitMediaSliderContainer = 2300,
  kCSSSelectorWebkitMediaSliderThumb = 2301,
  kCSSSelectorWebkitMediaTextTrackContainer = 2302,
  kCSSSelectorWebkitMediaTextTrackDisplay = 2303,
  kCSSSelectorWebkitMediaTextTrackRegion = 2304,
  kCSSSelectorWebkitMediaTextTrackRegionContainer = 2305,
  kCSSSelectorWebkitMeterBar = 2306,
  kCSSSelectorWebkitMeterEvenLessGoodValue = 2307,
  kCSSSelectorWebkitMeterInnerElement = 2308,
  kCSSSelectorWebkitMeterOptimumValue = 2309,
  kCSSSelectorWebkitMeterSuboptimumValue = 2310,
  kCSSSelectorWebkitProgressBar = 2311,
  kCSSSelectorWebkitProgressInnerElement = 2312,
  kCSSSelectorWebkitProgressValue = 2313,
  kCSSSelectorWebkitSearchCancelButton = 2314,
  kCSSSelectorWebkitSliderContainer = 2315,
  kCSSSelectorWebkitSliderRunnableTrack = 2316,
  kCSSSelectorWebkitSliderThumb = 2317,
  kCSSSelectorWebkitTextfieldDecorationContainer = 2318,
  kCSSSelectorWebkitUnknownPseudo = 2319,
  kFilterAsContainingBlockMayChangeOutput = 2320,
  kDispatchMouseUpDownEventOnDisabledFormControl = 2321,
  kCSSSelectorPseudoIs = 2322,
  kV8RTCRtpSender_ReplaceTrack_Method = 2323,
  kInputTypeFileSecureOriginOpenChooser = 2324,
  kInputTypeFileInsecureOriginOpenChooser = 2325,
  kBasicShapeEllipseNoRadius = 2326,
  kBasicShapeEllipseTwoRadius = 2328,
  kTemporalInputTypeChooserByTrustedClick = 2329,
  kTemporalInputTypeChooserByUntrustedClick = 2330,
  kTemporalInputTypeIgnoreUntrustedClick = 2331,
  kColorInputTypeChooserByTrustedClick = 2332,
  kColorInputTypeChooserByUntrustedClick = 2333,
  kCSSTypedOMStylePropertyMap = 2334,
  kRTCPeerConnectionWithActiveCsp = 2346,
  // The above items are available as of the M65 branch.

  kImageDecodingAttribute = 2347,
  kImageDecodeAPI = 2348,
  kV8HTMLElement_Autocapitalize_AttributeGetter = 2349,
  kV8HTMLElement_Autocapitalize_AttributeSetter = 2350,
  kCSSLegacyAlignment = 2351,
  kSRISignatureCheck = 2352,
  kSRISignatureSuccess = 2353,
  kCSSBasicShape = 2354,
  kCSSGradient = 2355,
  kCSSPaintFunction = 2356,
  kWebkitCrossFade = 2357,
  kDisablePictureInPictureAttribute = 2358,
  kCertificateTransparencyNonCompliantSubresourceInMainFrame = 2359,
  kCertificateTransparencyNonCompliantResourceInSubframe = 2360,
  kV8AbortController_Constructor = 2361,
  kReplaceCharsetInXHRIgnoringCase = 2362,
  kHTMLIFrameElementGestureMedia = 2363,
  kWorkletAddModule = 2364,
  kAnimationWorkletRegisterAnimator = 2365,
  kWorkletAnimationConstructor = 2366,
  kScrollTimelineConstructor = 2367,
  kAsyncClipboardAPIRead = 2369,
  kAsyncClipboardAPIWrite = 2370,
  kAsyncClipboardAPIReadText = 2371,
  kAsyncClipboardAPIWriteText = 2372,
  kOpenerNavigationWithoutGesture = 2373,
  kGetComputedStyleWebkitAppearance = 2374,
  kV8LockManager_Request_Method = 2375,
  kV8LockManager_Query_Method = 2376,
  kV8RTCDTMFSender_Track_AttributeGetter = 2378,
  kV8RTCDTMFSender_Duration_AttributeGetter = 2379,
  kV8RTCDTMFSender_InterToneGap_AttributeGetter = 2380,
  kV8RTCRtpSender_Dtmf_AttributeGetter = 2381,
  kRTCConstraintEnableDtlsSrtpTrue = 2382,
  kRTCConstraintEnableDtlsSrtpFalse = 2383,
  kDeprecatedRtcPeerConnectionId = 2384,
  kV8PaintWorkletGlobalScope_RegisterPaint_Method = 2385,
  kV8PaintWorkletGlobalScope_DevicePixelRatio_AttributeGetter = 2386,
  kCSSSelectorPseudoFocus = 2387,
  kCSSSelectorPseudoFocusVisible = 2388,
  kDistrustedLegacySymantecSubresource = 2389,
  kVRDisplayGetFrameData = 2390,
  kXMLHttpRequestResponseXML = 2391,
  kMessagePortTransferClosedPort = 2392,
  kRTCLocalSdpModification = 2393,
  kKeyboardApiLock = 2394,
  kKeyboardApiUnlock = 2395,
  kPPAPIURLRequestStreamToFile = 2396,
  kPaymentHandler = 2397,
  kPaymentRequestShowWithoutGesture = 2398,
  kReadableStreamConstructor = 2399,
  kWritableStreamConstructor = 2400,
  kTransformStreamConstructor = 2401,
  kNegativeBackgroundSize = 2402,
  kNegativeMaskSize = 2403,
  kClientHintsRtt = 2404,
  kClientHintsDownlink = 2405,
  kClientHintsEct = 2406,
  kCrossOriginHTMLIFrameElementContentDocument = 2407,
  kCrossOriginHTMLIFrameElementGetSVGDocument = 2408,
  kCrossOriginHTMLEmbedElementGetSVGDocument = 2409,
  kCrossOriginHTMLFrameElementContentDocument = 2410,
  kCrossOriginHTMLObjectElementContentDocument = 2411,
  kCrossOriginHTMLObjectElementGetSVGDocument = 2412,
  kNavigatorXR = 2413,
  kXRRequestDevice = 2414,
  kXRRequestSession = 2415,
  kXRSupportsSession = 2416,
  kXRSessionGetInputSources = 2417,
  kCSSResizeAuto = 2418,
  kPrefixedCursorGrab = 2419,
  kPrefixedCursorGrabbing = 2420,
  kCredentialManagerCreatePublicKeyCredential = 2421,
  kCredentialManagerGetPublicKeyCredential = 2422,
  kCredentialManagerMakePublicKeyCredentialSuccess = 2423,
  kCredentialManagerGetPublicKeyCredentialSuccess = 2424,
  kShapeOutsideContentBox = 2425,
  kShapeOutsidePaddingBox = 2426,
  kShapeOutsideBorderBox = 2427,
  kShapeOutsideMarginBox = 2428,
  kPerformanceTimeline = 2429,
  kUserTiming = 2430,
  kCSSSelectorPseudoWhere = 2431,
  kKeyboardApiGetLayoutMap = 2432,
  kPerformanceResourceTimingInitiatorType = 2434,
  kV8ArraySortNoElementsProtector = 2436,
  kV8ArrayPrototypeSortJSArrayModifiedPrototype = 2437,
  kV8Document_PictureInPictureEnabled_AttributeGetter = 2438,
  kV8Document_PictureInPictureElement_AttributeGetter = 2439,
  kV8Document_ExitPictureInPicture_Method = 2440,
  kV8ShadowRoot_PictureInPictureElement_AttributeGetter = 2441,
  kV8HTMLVideoElement_DisablePictureInPicture_AttributeGetter = 2442,
  kV8HTMLVideoElement_DisablePictureInPicture_AttributeSetter = 2443,
  kV8HTMLVideoElement_RequestPictureInPicture_Method = 2444,
  kEnterPictureInPictureEventListener = 2445,
  kLeavePictureInPictureEventListener = 2446,
  kV8PictureInPictureWindow_Height_AttributeGetter = 2447,
  kV8PictureInPictureWindow_Width_AttributeGetter = 2448,
  kPictureInPictureWindowResizeEventListener = 2449,
  kV8CookieStore_Delete_Method = 2450,
  kV8CookieStore_Get_Method = 2451,
  kV8CookieStore_GetAll_Method = 2452,
  kV8CookieStore_GetChangeSubscriptions_Method = 2453,
  kV8CookieStore_Has_Method = 2454,
  kV8CookieStore_Set_Method = 2455,
  kV8CookieStore_SubscribeToChanges_Method = 2456,
  kV8CookieChangeEvent_Changed_AttributeGetter = 2457,
  kV8CookieChangeEvent_Deleted_AttributeGetter = 2458,
  kV8ExtendableCookieChangeEvent_Changed_AttributeGetter = 2459,
  kV8ExtendableCookieChangeEvent_Deleted_AttributeGetter = 2460,
  kShapeOutsideContentBoxDifferentFromMarginBox = 2461,
  kShapeOutsidePaddingBoxDifferentFromMarginBox = 2462,
  kDeprecatedCSSContainLayoutPositionedDescendants = 2463,
  kCanvasConvertToBlob = 2465,
  kPolymerV1Detected = 2466,
  kPolymerV2Detected = 2467,
  kPerformanceEventTimingBuffer = 2468,
  kPerformanceEventTimingConstructor = 2469,
  kReverseIterateDOMStorage = 2470,
  kTextToSpeech_Speak = 2471,
  kTextToSpeech_SpeakCrossOrigin = 2472,
  kTextToSpeech_SpeakDisallowedByAutoplay = 2473,
  kStaleWhileRevalidateEnabled = 2474,
  kMediaElementSourceOnOfflineContext = 2475,
  kMediaStreamDestinationOnOfflineContext = 2476,
  kMediaStreamSourceOnOfflineContext = 2477,
  kRTCDataChannelInitMaxRetransmitTime = 2478,
  kRTCPeerConnectionCreateDataChannelMaxPacketLifeTime = 2479,
  kV8SpeechGrammarList_AddFromUri_Method = 2480,
  kV8SpeechRecognitionEvent_Interpretation_AttributeGetter = 2481,
  kV8SpeechRecognitionEvent_Emma_AttributeGetter = 2482,
  kV8SpeechSynthesis_Speak_Method = 2483,
  kLegacySymantecCertMainFrameResource = 2484,
  kLegacySymantecCertInSubresource = 2485,
  kLegacySymantecCertInSubframeMainResource = 2486,
  kEventTimingExplicitlyRequested = 2487,
  kCSSEnvironmentVariable = 2488,
  kCSSEnvironmentVariable_SafeAreaInsetTop = 2489,
  kCSSEnvironmentVariable_SafeAreaInsetLeft = 2490,
  kCSSEnvironmentVariable_SafeAreaInsetBottom = 2491,
  kCSSEnvironmentVariable_SafeAreaInsetRight = 2492,
  kMediaControlsDisplayCutoutGesture = 2493,
  kDocumentOpenTwoArgs = 2494,
  kDocumentOpenTwoArgsWithReplace = 2495,
  kDocumentOpenThreeArgs = 2496,
  kV8FunctionTokenOffsetTooLongForToString = 2497,
  kServiceWorkerImportScriptNotInstalled = 2498,
  kNestedDedicatedWorker = 2499,
  kClientHintsMetaAcceptCHLifetime = 2500,
  kCSSFillAvailableLogicalWidth = 2507,
  kCSSFillAvailableLogicalHeight = 2508,
  kPopupOpenWhileFileChooserOpened = 2509,
  kCookieStoreAPI = 2510,
  kFeaturePolicyJSAPI = 2511,
  kV8RTCPeerConnection_GetTransceivers_Method = 2512,
  kV8RTCPeerConnection_AddTransceiver_Method = 2513,
  kV8RTCRtpTransceiver_Direction_AttributeGetter = 2514,
  kV8RTCRtpTransceiver_Direction_AttributeSetter = 2515,
  kHTMLLinkElementDisabledByParser = 2516,
  kRequestIsHistoryNavigation = 2517,
  kAddDocumentLevelPassiveTrueWheelEventListener = 2518,
  kAddDocumentLevelPassiveFalseWheelEventListener = 2519,
  kAddDocumentLevelPassiveDefaultWheelEventListener = 2520,
  kDocumentLevelPassiveDefaultEventListenerPreventedWheel = 2521,
  kOBSOLETE_ShapeDetectionAPI = 2522,
  kV8SourceBuffer_ChangeType_Method = 2523,
  kPPAPIWebSocket = 2524,
  kV8MediaStreamTrack_ContentHint_AttributeGetter = 2525,
  kV8MediaStreamTrack_ContentHint_AttributeSetter = 2526,
  kV8IDBFactory_Open_Method = 2527,
  kReportingObserver = 2529,
  kDeprecationReport = 2530,
  kInterventionReport = 2531,
  kV8WasmSharedMemory = 2532,
  kV8WasmThreadOpcodes = 2533,
  kFeaturePolicyReport = 2536,
  kV8Window_WebkitRTCPeerConnection_ConstructorGetter = 2537,
  kV8Window_WebkitMediaStream_ConstructorGetter = 2538,
  kTextEncoderStreamConstructor = 2539,
  kTextDecoderStreamConstructor = 2540,
  kSignedExchangeInnerResponse = 2541,
  kPaymentAddressLanguageCode = 2542,
  kDocumentDomainBlockedCrossOriginAccess = 2543,
  kDocumentDomainEnabledCrossOriginAccess = 2544,
  kSerialGetPorts = 2545,
  kSerialRequestPort = 2546,
  kSerialPortOpen = 2547,
  kSerialPortClose = 2548,
  kBackgroundFetchManagerFetch = 2549,
  kBackgroundFetchManagerGet = 2550,
  kBackgroundFetchManagerGetIds = 2551,
  kBackgroundFetchRegistrationAbort = 2552,
  kBackgroundFetchRegistrationMatch = 2553,
  kBackgroundFetchRegistrationMatchAll = 2554,
  kFormDisabledAttributePresent = 2557,
  kFormDisabledAttributePresentAndSubmit = 2558,
  kCSSValueAppearanceCheckboxRendered = 2559,
  kCSSValueAppearanceRadioRendered = 2561,
  kCSSValueAppearanceInnerSpinButtonRendered = 2563,
  kCSSValueAppearanceMenuListRendered = 2565,
  kCSSValueAppearanceProgressBarRendered = 2567,
  kCSSValueAppearanceSliderHorizontalRendered = 2568,
  kCSSValueAppearanceSliderVerticalRendered = 2570,
  kCSSValueAppearanceSliderThumbHorizontalRendered = 2572,
  kCSSValueAppearanceSliderThumbVerticalRendered = 2574,
  kCSSValueAppearanceSearchFieldRendered = 2576,
  kCSSValueAppearanceSearchCancelRendered = 2578,
  kCSSValueAppearanceTextAreaRendered = 2580,
  kCSSValueAppearanceMenuListButtonRendered = 2582,
  kCSSValueAppearancePushButtonRendered = 2584,
  kCSSValueAppearanceSquareButtonRendered = 2586,
  kGetComputedStyleForWebkitAppearanceExcludeDevTools = 2588,  // M73
  kCursorImageLE32x32 = 2589,
  kCursorImageGT32x32 = 2590,
  kRTCPeerConnectionComplexPlanBSdpUsingDefaultSdpSemantics = 2591,
  // The above items are available in M71 branch.

  kResizeObserver_Constructor = 2592,
  kCollator = 2593,
  kNumberFormat = 2594,
  kDateTimeFormat = 2595,
  kPluralRules = 2596,
  kRelativeTimeFormat = 2597,
  kLocale = 2598,
  kListFormat = 2599,
  kSegmenter = 2600,
  kStringLocaleCompare = 2601,
  kStringToLocaleUpperCase = 2602,
  kStringToLocaleLowerCase = 2603,
  kNumberToLocaleString = 2604,
  kDateToLocaleString = 2605,
  kDateToLocaleDateString = 2606,
  kDateToLocaleTimeString = 2607,
  kMalformedCSP = 2608,
  kV8AttemptOverrideReadOnlyOnPrototypeSloppy = 2609,
  kV8AttemptOverrideReadOnlyOnPrototypeStrict = 2610,
  kHTMLCanvasElementLowLatency = 2611,
  kV8OptimizedFunctionWithOneShotBytecode = 2612,
  kSVGGeometryPropertyHasNonZeroUnitlessValue = 2613,
  kCSSValueAppearanceNoImplementationSkipBorder = 2614,
  kInstantiateModuleScript = 2615,
  kDynamicImportModuleScript = 2616,
  kHistoryPushState = 2617,
  kHistoryReplaceState = 2618,
  kGetDisplayMedia = 2619,
  kCursorImageGT64x64 = 2620,
  kAdClick = 2621,
  kUpdateWithoutShippingOptionOnShippingAddressChange = 2622,
  kUpdateWithoutShippingOptionOnShippingOptionChange = 2623,
  kCSSSelectorEmptyWhitespaceOnlyFail = 2624,
  kActivatedImplicitRootScroller = 2625,
  kCSSUnknownNamespacePrefixInSelector = 2626,
  kPageLifeCycleFreeze = 2627,
  kDefaultInCustomIdent = 2628,
  kHTMLAnchorElementHrefTranslateAttribute = 2629,
  kWebKitUserModifyEffective = 2630,
  kPlainTextEditingEffective = 2631,
  kLegacyTLSVersionInMainFrameResource = 2634,
  kLegacyTLSVersionInSubresource = 2635,
  kLegacyTLSVersionInSubframeMainResource = 2636,
  kRTCMaxAudioBufferSize = 2637,
  kWebKitUserModifyReadWriteEffective = 2638,
  kWebKitUserModifyReadOnlyEffective = 2639,
  kWebKitUserModifyPlainTextEffective = 2640,
  kCSSAtRuleFontFeatureValues = 2641,
  kFlexboxSingleLineAlignContent = 2642,
  kSignedExchangeInnerResponseInMainFrame = 2643,
  kSignedExchangeInnerResponseInSubFrame = 2644,
  // The above items are available in M72 branch.

  kV8IDBFactory_Databases_Method = 2648,
  kOpenerNavigationDownloadCrossOrigin = 2649,
  kV8RegExpMatchIsTrueishOnNonJSRegExp = 2650,
  kV8RegExpMatchIsFalseishOnJSRegExp = 2651,
  kDownloadInAdFrameWithoutUserGesture = 2653,
  kNavigatorAppVersion = 2654,
  kNavigatorDoNotTrack = 2655,
  kNavigatorHardwareConcurrency = 2656,
  kNavigatorLanguage = 2657,
  kNavigatorLanguages = 2658,
  kNavigatorMaxTouchPoints = 2659,
  kNavigatorMimeTypes = 2660,
  kNavigatorPlatform = 2661,
  kNavigatorPlugins = 2662,
  kNavigatorUserAgent = 2663,
  kWebBluetoothRequestScan = 2664,
  kV8SVGGeometryElement_IsPointInFill_Method = 2665,
  kV8SVGGeometryElement_IsPointInStroke_Method = 2666,
  kV8SVGGeometryElement_GetTotalLength_Method = 2667,
  kV8SVGGeometryElement_GetPointAtLength_Method = 2668,
  kOffscreenCanvasTransferToImageBitmap = 2669,
  kOffscreenCanvasIsPointInPath = 2670,
  kOffscreenCanvasIsPointInStroke = 2671,
  kOffscreenCanvasMeasureText = 2672,
  kOffscreenCanvasGetImageData = 2673,
  kV8SVGTextContentElement_GetComputedTextLength_Method = 2674,
  kV8SVGTextContentElement_GetEndPositionOfChar_Method = 2675,
  kV8SVGTextContentElement_GetExtentOfChar_Method = 2676,
  kV8SVGTextContentElement_GetStartPositionOfChar_Method = 2677,
  kV8SVGTextContentElement_GetSubStringLength_Method = 2678,
  kV8BatteryManager_ChargingTime_AttributeGetter = 2679,
  kV8BatteryManager_Charging_AttributeGetter = 2680,
  kV8BatteryManager_DischargingTime_AttributeGetter = 2681,
  kV8BatteryManager_Level_AttributeGetter = 2682,
  kV8PaintRenderingContext2D_IsPointInPath_Method = 2683,
  kV8PaintRenderingContext2D_IsPointInStroke_Method = 2684,
  kV8PaymentRequest_CanMakePayment_Method = 2685,
  kV8AnalyserNode_GetByteFrequencyData_Method = 2686,
  kV8AnalyserNode_GetByteTimeDomainData_Method = 2687,
  kV8AnalyserNode_GetFloatFrequencyData_Method = 2688,
  kV8AnalyserNode_GetFloatTimeDomainData_Method = 2689,
  kV8AudioBuffer_CopyFromChannel_Method = 2690,
  kV8AudioBuffer_GetChannelData_Method = 2691,
  kWebGLDebugRendererInfo = 2692,
  kV8WebGL2ComputeRenderingContext_GetExtension_Method = 2693,
  kV8WebGL2ComputeRenderingContext_GetSupportedExtensions_Method = 2694,
  kV8WebGL2RenderingContext_GetExtension_Method = 2695,
  kV8WebGL2RenderingContext_GetSupportedExtensions_Method = 2696,
  kV8WebGLRenderingContext_GetExtension_Method = 2697,
  kV8WebGLRenderingContext_GetSupportedExtensions_Method = 2698,
  kV8Screen_AvailHeight_AttributeGetter = 2699,
  kV8Screen_AvailWidth_AttributeGetter = 2700,
  kV8Screen_ColorDepth_AttributeGetter = 2701,
  kV8Screen_Height_AttributeGetter = 2702,
  kV8Screen_PixelDepth_AttributeGetter = 2703,
  kV8Screen_Width_AttributeGetter = 2704,
  kWindowInnerWidth = 2705,
  kWindowInnerHeight = 2706,
  kV8Window_MatchMedia_Method = 2707,
  kWindowScrollX = 2708,
  kWindowScrollY = 2709,
  kWindowPageXOffset = 2710,
  kWindowPageYOffset = 2711,
  kWindowScreenX = 2712,
  kWindowScreenY = 2713,
  kWindowOuterHeight = 2714,
  kWindowOuterWidth = 2715,
  kWindowDevicePixelRatio = 2716,
  kCanvasCaptureStream = 2717,
  kV8HTMLMediaElement_CanPlayType_Method = 2718,
  kHistoryLength = 2719,
  kFeaturePolicyReportOnlyHeader = 2720,
  kV8PaymentRequest_HasEnrolledInstrument_Method = 2721,
  kTrustedTypesEnabled = 2722,
  kTrustedTypesCreatePolicy = 2723,
  kTrustedTypesDefaultPolicyCreated = 2724,
  kTrustedTypesAssignmentError = 2725,
  kBadgeSet = 2726,
  kBadgeClear = 2727,
  kElementTimingExplicitlyRequested = 2728,
  kV8HTMLMediaElement_CaptureStream_Method = 2729,
  kQuirkyLineBoxBackgroundSize = 2730,
  kDirectlyCompositedImage = 2731,
  kV8HTMLVideoElement_AutoPictureInPicture_AttributeGetter = 2733,
  kV8HTMLVideoElement_AutoPictureInPicture_AttributeSetter = 2734,
  kAutoPictureInPictureAttribute = 2735,
  kRTCAudioJitterBufferRtxHandling = 2736,
  kWebShareCanShare = 2737,
  kPriorityHints = 2738,
  kTextAutosizedCrossSiteIframe = 2739,
  kV8RTCQuicTransport_Constructor = 2740,
  kV8RTCQuicTransport_Transport_AttributeGetter = 2741,
  kV8RTCQuicTransport_State_AttributeGetter = 2742,
  kV8RTCQuicTransport_GetKey_Method = 2743,
  kV8RTCQuicTransport_GetStats_Method = 2744,
  kV8RTCQuicTransport_Connect_Method = 2745,
  kV8RTCQuicTransport_Listen_Method = 2746,
  kV8RTCQuicTransport_Stop_Method = 2747,
  kV8RTCQuicTransport_CreateStream_Method = 2748,
  kV8RTCIceTransport_Constructor = 2749,
  kV8RTCIceTransport_Role_AttributeGetter = 2750,
  kV8RTCIceTransport_State_AttributeGetter = 2751,
  kV8RTCIceTransport_GatheringState_AttributeGetter = 2752,
  kV8RTCIceTransport_GetLocalCandidates_Method = 2753,
  kV8RTCIceTransport_GetRemoteCandidates_Method = 2754,
  kV8RTCIceTransport_GetSelectedCandidatePair_Method = 2755,
  kV8RTCIceTransport_GetLocalParameters_Method = 2756,
  kV8RTCIceTransport_GetRemoteParameters_Method = 2757,
  kV8RTCQuicStream_Transport_AttributeGetter = 2758,
  kV8RTCQuicStream_State_AttributeGetter = 2759,
  kV8RTCQuicStream_ReadBufferedAmount_AttributeGetter = 2760,
  kV8RTCQuicStream_MaxReadBufferedAmount_AttributeGetter = 2761,
  kV8RTCQuicStream_WriteBufferedAmount_AttributeGetter = 2762,
  kV8RTCQuicStream_MaxWriteBufferedAmount_AttributeGetter = 2763,
  kV8RTCQuicStream_ReadInto_Method = 2764,
  kV8RTCQuicStream_Write_Method = 2765,
  kV8RTCQuicStream_Reset_Method = 2766,
  kV8RTCQuicStream_WaitForWriteBufferedAmountBelow_Method = 2767,
  kV8RTCQuicStream_WaitForReadable_Method = 2768,
  // The above items are available in M73 branch.

  kHTMLTemplateElement = 2769,
  kNoSysexWebMIDIWithoutPermission = 2770,
  kNoSysexWebMIDIOnInsecureOrigin = 2771,
  kApplicationCacheInstalledButNoManifest = 2772,
  kCustomCursorIntersectsViewport = 2776,
  kClientHintsLang = 2777,
  kLinkRelPreloadImageSrcset = 2778,
  kV8HTMLMediaElement_Remote_AttributeGetter = 2779,
  kV8RemotePlayback_WatchAvailability_Method = 2780,
  kV8RemotePlayback_Prompt_Method = 2781,
  kLayoutShiftExplicitlyRequested = 2782,
  kMediaSessionSkipAd = 2783,
  kV8UserActivation_HasBeenActive_AttributeGetter = 2785,
  kV8UserActivation_IsActive_AttributeGetter = 2786,
  kTextEncoderEncodeInto = 2787,
  kClientHintsUA = 2789,
  kClientHintsUAArch = 2790,
  kClientHintsUAPlatform = 2791,
  kClientHintsUAModel = 2792,
  kAnimationFrameCancelledWithinFrame = 2793,
  kSchedulingIsInputPending = 2794,
  kV8StringNormalize = 2795,
  kU2FCryptotokenRegister = 2812,
  kU2FCryptotokenSign = 2813,
  kCSSValueAppearanceInnerSpinButton = 2814,
  kCSSValueAppearanceMeter = 2815,
  kCSSValueAppearanceProgressBar = 2816,
  kCSSValueAppearancePushButton = 2818,
  kCSSValueAppearanceSquareButton = 2819,
  kCSSValueAppearanceSearchCancel = 2820,
  kCSSValueAppearanceTextarea = 2821,
  kCSSValueAppearanceTextFieldForTemporalRendered = 2823,
  kAdClickNavigation = 2826,
  kRTCStatsRelativePacketArrivalDelay = 2827,
  // The above items are available in M74 branch.

  kCSSSelectorHostContextInSnapshotProfile = 2829,
  kCSSSelectorHostContextInLiveProfile = 2830,
  kImportMap = 2831,
  kRefreshHeader = 2832,
  kSearchEventFired = 2833,
  kIdleDetectionStart = 2834,
  kTargetCurrent = 2835,
  kSandboxBackForwardStaysWithinSubtree = 2836,
  kSandboxBackForwardAffectsFramesOutsideSubtree = 2837,
  kDownloadPrePolicyCheck = 2838,
  kDownloadPostPolicyCheck = 2839,
  kReadableStreamGetReader = 2841,
  kReadableStreamPipeThrough = 2842,
  kReadableStreamPipeTo = 2843,
  kCSSStyleSheetReplace = 2844,
  kCSSStyleSheetReplaceSync = 2845,
  kAdoptedStyleSheets = 2846,
  kOBSOLETE_HTMLImportsOnReverseOriginTrials = 2847,
  kOBSOLETE_ElementCreateShadowRootOnReverseOriginTrials = 2848,
  kOBSOLETE_DocumentRegisterElementOnReverseOriginTrials = 2849,
  kInputTypeRadio = 2850,
  kInputTypeCheckbox = 2851,
  kInputTypeImage = 2852,
  kInputTypeButton = 2853,
  kInputTypeHidden = 2854,
  kInputTypeReset = 2855,
  kSelectElementSingle = 2856,
  kSelectElementMultiple = 2857,
  kV8Animation_Effect_AttributeGetter = 2858,
  kV8Animation_Effect_AttributeSetter = 2859,
  kHidDeviceClose = 2860,
  kHidDeviceOpen = 2861,
  kHidDeviceReceiveFeatureReport = 2862,
  kHidDeviceSendFeatureReport = 2863,
  kHidDeviceSendReport = 2864,
  kHidGetDevices = 2865,
  kHidRequestDevice = 2866,
  kV8RTCQuicTransport_MaxDatagramLength_AttributeGetter = 2867,
  kV8RTCQuicTransport_ReadyToSendDatagram_Method = 2868,
  kV8RTCQuicTransport_SendDatagram_Method = 2869,
  kV8RTCQuicTransport_ReceiveDatagrams_Method = 2870,
  // The above items are available in M75 branch.

  kCSSValueContainStyle = 2871,
  kWebShareSuccessfulContainingFiles = 2872,
  kWebShareSuccessfulWithoutFiles = 2873,
  kWebShareUnsuccessfulContainingFiles = 2874,
  kWebShareUnsuccessfulWithoutFiles = 2875,
  kVerticalScrollbarThumbScrollingWithMouse = 2876,
  kVerticalScrollbarThumbScrollingWithTouch = 2877,
  kHorizontalScrollbarThumbScrollingWithMouse = 2878,
  kHorizontalScrollbarThumbScrollingWithTouch = 2879,
  kWebOTP = 2880,
  kV8Animation_Pending_AttributeGetter = 2881,
  kFocusWithoutUserActivationNotSandboxedNotAdFrame = 2882,
  kFocusWithoutUserActivationNotSandboxedAdFrame = 2883,
  kFocusWithoutUserActivationSandboxedNotAdFrame = 2884,
  kFocusWithoutUserActivationSandboxedAdFrame = 2885,
  kV8RTCRtpReceiver_JitterBufferDelayHint_AttributeGetter = 2886,
  kV8RTCRtpReceiver_JitterBufferDelayHint_AttributeSetter = 2887,
  kMediaCapabilitiesDecodingInfoWithKeySystemConfig = 2888,
  kOBSOLETE_RevertInCustomIdent = 2889,
  kUnoptimizedImagePolicies = 2890,
  kVTTCueParser = 2891,
  kMediaElementTextTrackContainer = 2892,
  kMediaElementTextTrackList = 2893,
  kPaymentRequestInitialized = 2894,
  kPaymentRequestShow = 2895,
  kPaymentRequestShippingAddressChange = 2896,
  kPaymentRequestShippingOptionChange = 2897,
  kPaymentRequestPaymentMethodChange = 2898,
  kV8Animation_UpdatePlaybackRate_Method = 2899,
  kTwoValuedOverflow = 2900,
  kTextFragmentAnchor = 2901,
  kTextFragmentAnchorMatchFound = 2902,
  kNonPassiveTouchEventListener = 2903,
  kPassiveTouchEventListener = 2904,
  kWebXrFramebufferScale = 2906,
  kWebXrIgnoreDepthValues = 2907,
  kWebXrSessionCreated = 2908,
  kV8XRReferenceSpace_GetOffsetReferenceSpace_Method = 2909,
  kV8XRInputSource_Gamepad_AttributeGetter = 2910,
  kV8XRSession_End_Method = 2911,
  kV8XRWebGLLayer_Constructor = 2912,
  kFetchKeepalive = 2913,
  kCSSTransitionCancelledByRemovingStyle = 2914,
  kV8RTCRtpSender_SetStreams_Method = 2915,
  kCookieNoSameSite = 2916,
  kCookieInsecureAndSameSiteNone = 2917,
  // The above items are available in M76 branch.

  kUnsizedMediaPolicy = 2918,
  kScrollByPrecisionTouchPad = 2919,
  kPinchZoom = 2920,
  kFeaturePolicyCommaSeparatedDeclarations = 2922,
  kFeaturePolicySemicolonSeparatedDeclarations = 2923,
  kV8CallSiteAPIGetFunctionSloppyCall = 2924,
  kV8CallSiteAPIGetThisSloppyCall = 2925,
  kLargestContentfulPaintExplicitlyRequested = 2927,
  kPageFreezeOptIn = 2928,
  kPageFreezeOptOut = 2929,
  kPeriodicBackgroundSync = 2930,
  kPeriodicBackgroundSyncRegister = 2931,
  kLazyLoadFrameLoadingAttributeEager = 2932,
  kLazyLoadFrameLoadingAttributeLazy = 2933,
  kLazyLoadImageLoadingAttributeEager = 2934,
  kLazyLoadImageLoadingAttributeLazy = 2935,
  kLazyLoadImageMissingDimensionsForLazy = 2936,
  kPeriodicBackgroundSyncGetTags = 2937,
  kPeriodicBackgroundSyncUnregister = 2938,
  kCreateObjectURLMediaSourceFromWorker = 2939,
  kCSSAtRuleProperty = 2940,
  kServiceWorkerInterceptedRequestFromOriginDirtyStyleSheet = 2941,
  kWebkitMarginBeforeCollapseDiscard = 2942,
  kWebkitMarginBeforeCollapseSeparate = 2943,
  kWebkitMarginBeforeCollapseSeparateMaybeDoesSomething = 2944,
  kWebkitMarginAfterCollapseDiscard = 2945,
  kWebkitMarginAfterCollapseSeparate = 2946,
  kWebkitMarginAfterCollapseSeparateMaybeDoesSomething = 2947,
  kCredentialManagerGetWithUVM = 2949,
  kCredentialManagerGetSuccessWithUVM = 2951,
  kDiscardInputEventToMovingIframe = 2952,
  kSignedExchangeSubresourcePrefetch = 2953,
  kBasicCardType = 2954,
  kExecutedJavaScriptURL = 2955,
  kLinkPrefetchLoadEvent = 2956,
  kLinkPrefetchErrorEvent = 2957,
  kFontSizeWebkitXxxLarge = 2958,
  kV8Database_ChangeVersion_Method = 2959,
  kV8Database_Transaction_Method = 2960,
  kV8Database_ReadTransaction_Method = 2961,
  kV8SQLTransaction_ExecuteSql_Method = 2962,
  kV8PointerEvent_GetPredictedEvents_Method = 2971,
  kOBSOLETE_ScrollSnapOnViewportBreaks = 2972,
  kOBSOLETE_ScrollPaddingOnViewportBreaks = 2973,
  kDownloadInAdFrame = 2974,
  kDownloadInSandbox = 2975,
  kDownloadWithoutUserGesture = 2976,
  // The above items are available in M77 branch.

  kAutoplayDynamicDelegation = 2977,
  kToggleEventHandlerDuringParsing = 2978,
  kFragmentDoubleHash = 2979,
  kOBSOLETE_CSSValueOverflowXOverlay = 2981,
  kOBSOLETE_CSSValueOverflowYOverlay = 2982,
  kContentIndexAdd = 2983,
  kContentIndexDelete = 2984,
  kContentIndexGet = 2985,
  kV8SpeechGrammar_Constructor = 2986,
  kV8SpeechGrammarList_AddFromString_Method = 2987,
  kV8SpeechGrammarList_Constructor = 2988,
  kV8SpeechGrammarList_Item_Method = 2989,
  kV8SpeechRecognition_Constructor = 2990,
  kV8SpeechRecognition_Grammars_AttributeGetter = 2991,
  kV8SpeechRecognition_Grammars_AttributeSetter = 2992,
  kContactsManagerSelect = 2993,
  kV8MediaSession_SetPositionState_Method = 2994,
  kCSSValueOverflowOverlay = 2995,
  kRequestedFileSystemTemporary = 2996,
  kRequestedFileSystemPersistent = 2997,
  kElementWithLeftwardOrUpwardOverflowDirection_ScrollLeftOrTop = 2998,
  kElementWithLeftwardOrUpwardOverflowDirection_ScrollLeftOrTopSetPositive =
      2999,
  kXMLHttpRequestSynchronousInMainFrame = 3000,
  kXMLHttpRequestSynchronousInCrossOriginSubframe = 3001,
  kXMLHttpRequestSynchronousInSameOriginSubframe = 3002,
  kXMLHttpRequestSynchronousInWorker = 3003,
  kPerformanceObserverBufferedFlag = 3004,
  kWakeLockAcquireScreenLock = 3005,
  kWakeLockAcquireSystemLock = 3006,
  kThirdPartyServiceWorker = 3007,
  kJSSelfProfiling = 3008,
  kHTMLFrameSetElement = 3009,
  kFetchRedirectError = 3012,
  kFetchRedirectManual = 3013,
  kFetchCacheReload = 3014,
  kV8Window_ChooseFileSystemEntries_Method = 3015,
  kV8FileSystemDirectoryHandle_GetSystemDirectory_Method = 3016,
  kNotificationShowTrigger = 3017,
  kWebSocketStreamConstructor = 3018,
  kDOMStorageRead = 3019,
  kDOMStorageWrite = 3020,
  kCacheStorageRead = 3021,
  kCacheStorageWrite = 3022,
  kIndexedDBRead = 3023,
  kIndexedDBWrite = 3024,
  kDeprecatedFileSystemRead = 3025,
  kDeprecatedFileSystemWrite = 3026,
  kPointerLockUnadjustedMovement = 3027,
  // The above items are available in M78 branch.

  kCreateObjectBlob = 3028,
  kQuotaRead = 3029,  // available in M78 branch.
  kDelegateFocus = 3030,
  kThirdPartySharedWorker = 3032,
  kThirdPartyBroadcastChannel = 3033,
  kMediaSourceGroupEndTimestampDecreaseWithinMediaSegment = 3034,
  kTextFragmentAnchorTapToDismiss = 3035,  // available in M78 branch.
  kXRIsSessionSupported = 3036,
  kScrollbarUseScrollbarButtonReversedDirection = 3037,
  kCSSSelectorPseudoScrollbarButtonReversedDirection = 3038,
  kFragmentHasTildeAmpersandTilde = 3039,
  kFragmentHasColonTildeColon = 3040,
  kFragmentHasTildeAtTilde = 3041,
  kFragmentHasAmpersandDelimiterQuestion = 3042,
  kInvalidFragmentDirective = 3043,
  kContactsManagerGetProperties = 3044,
  kPluginElementLoadedDocument = 3046,
  kPluginElementLoadedImage = 3047,
  kPluginElementLoadedExternal = 3048,
  kRenderSubtreeAttribute = 3049,  // Removed in M82
  kARIAAnnotations = 3050,
  kIntersectionObserverV2 = 3051,
  kHeavyAdIntervention = 3052,
  kUserTimingL3 = 3053,
  kGetGamepadsFromCrossOriginSubframe = 3054,
  kGetGamepadsFromInsecureContext = 3055,
  kOriginCleanImageBitmapSerialization = 3056,
  kNonOriginCleanImageBitmapSerialization = 3057,
  kOriginCleanImageBitmapTransfer = 3058,
  kNonOriginCleanImageBitmapTransfer = 3059,
  kCompressionStreamConstructor = 3060,
  kDecompressionStreamConstructor = 3061,
  kV8RTCRtpReceiver_PlayoutDelayHint_AttributeGetter = 3062,
  kV8RTCRtpReceiver_PlayoutDelayHint_AttributeSetter = 3063,
  // The above items are available in M79 branch.

  kV8RegExpExecCalledOnSlowRegExp = 3064,
  kV8RegExpReplaceCalledOnSlowRegExp = 3065,
  kHasMarkerPseudoElement = 3066,
  kWindowMove = 3067,
  kWindowResize = 3068,
  kMovedOrResizedPopup = 3069,
  kMovedOrResizedPopup2sAfterCreation = 3070,
  kDOMWindowOpenPositioningFeatures = 3071,
  kMouseEventScreenX = 3072,
  kMouseEventScreenY = 3073,
  kCredentialManagerIsUserVerifyingPlatformAuthenticatorAvailable = 3074,
  kObsoleteWebrtcTlsVersion = 3075,
  kUpgradeInsecureRequestsUpgradedRequestBlockable = 3076,
  kUpgradeInsecureRequestsUpgradedRequestOptionallyBlockable = 3077,
  kUpgradeInsecureRequestsUpgradedRequestWebsocket = 3078,
  kUpgradeInsecureRequestsUpgradedRequestForm = 3079,
  kUpgradeInsecureRequestsUpgradedRequestUnknown = 3080,
  kHasGlyphRelativeUnits = 3081,
  kCountQueuingStrategyConstructor = 3082,
  kByteLengthQueuingStrategyConstructor = 3083,
  kClassicDedicatedWorker = 3084,
  kModuleDedicatedWorker = 3085,
  kFetchBodyStreamInServiceWorker = 3086,
  kFetchBodyStreamOutsideServiceWorker = 3087,
  kGetComputedStyleOutsideFlatTree = 3088,
  kARIADescriptionAttribute = 3089,
  kStrictMimeTypeChecksWouldBlockWorker = 3090,
  kResourceTimingTaintedOriginFlagFail = 3091,
  kRegisterProtocolHandlerSameOriginAsTop = 3092,
  kRegisterProtocolHandlerCrossOriginSubframe = 3093,
  kWebNfcNdefReaderScan = 3094,
  kWebNfcNdefWriterWrite = 3095,
  kHTMLPortalElement = 3096,
  kV8HTMLPortalElement_Activate_Method = 3097,
  kV8HTMLPortalElement_PostMessage_Method = 3098,
  kV8Window_PortalHost_AttributeGetter = 3099,
  kV8PortalHost_PostMessage_Method = 3100,
  kV8PortalActivateEvent_Data_AttributeGetter = 3101,
  kV8PortalActivateEvent_AdoptPredecessor_Method = 3102,
  kLinkRelPrefetchForSignedExchanges = 3103,
  kMessageEventSharedArrayBufferSameOrigin = 3104,
  kMessageEventSharedArrayBufferSameAgentCluster = 3105,
  kMessageEventSharedArrayBufferDifferentAgentCluster = 3106,
  kCacheStorageCodeCacheHint = 3107,
  kV8Metadata_ModificationTime_AttributeGetter = 3108,
  kV8RTCLegacyStatsReport_Timestamp_AttributeGetter = 3109,
  kInputElementValueAsDateGetter = 3110,
  kInputElementValueAsDateSetter = 3111,
  kHTMLMetaElementReferrerPolicy = 3112,
  kNonWebbyMixedContent = 3113,
  kV8SharedArrayBufferConstructed = 3114,
  kScrollSnapCausesScrollOnInitialLayout = 3115,
  // The above items are available in M80 branch.

  kClientHintsUAMobile = 3116,
  kV8VideoPlaybackQuality_CorruptedVideoFrames_AttributeGetter = 3117,
  kLongTaskBufferFull = 3118,
  kHTMLMetaElementMonetization = 3119,
  kHTMLLinkElementMonetization = 3120,
  kOBSOLETE_InputTypeCheckboxRenderedNonSquare = 3121,
  kOBSOLETE_InputTypeRadioRenderedNonSquare = 3122,
  kWebkitBoxPackJustifyDoesSomething = 3123,
  kWebkitBoxPackCenterDoesSomething = 3124,
  kWebkitBoxPackEndDoesSomething = 3125,
  kV8KeyframeEffect_Constructor = 3126,
  kOBSOLETE_WebNfcAPI = 3127,
  kHostCandidateAttributeGetter = 3128,
  kCSPWithReasonableObjectRestrictions = 3129,
  kCSPWithReasonableBaseRestrictions = 3130,
  kCSPWithReasonableScriptRestrictions = 3131,
  kCSPWithReasonableRestrictions = 3132,
  kCSPROWithReasonableObjectRestrictions = 3133,
  kCSPROWithReasonableBaseRestrictions = 3134,
  kCSPROWithReasonableScriptRestrictions = 3135,
  kCSPROWithReasonableRestrictions = 3136,
  kCSPWithBetterThanReasonableRestrictions = 3137,
  kCSPROWithBetterThanReasonableRestrictions = 3138,
  kMeasureMemory = 3139,
  kV8Animation_ReplaceState_AttributeGetter = 3140,
  kV8Animation_Persist_Method = 3141,
  kTaskControllerConstructor = 3142,
  kTaskControllerSetPriority = 3143,
  kTaskSignalPriority = 3144,
  kSchedulerPostTask = 3145,
  kV8Animation_Onremove_AttributeGetter = 3146,
  kV8Animation_Onremove_AttributeSetter = 3147,
  kClassicSharedWorker = 3148,
  kModuleSharedWorker = 3149,
  kV8Animation_CommitStyles_Method = 3150,
  kSameOriginIframeWindowAlert = 3151,
  kSameOriginIframeWindowConfirm = 3152,
  kSameOriginIframeWindowPrompt = 3153,
  kSameOriginIframeWindowPrint = 3154,
  // The above items are available in M81 branch.

  kLargeStickyAd = 3155,
  kCSSComparisonFunctions = 3157,
  // Triggered if the proposed change in
  // https://github.com/w3c/webappsec-feature-policy/issues/357 would cause the
  // use of a feature to be denied in a document in which it is currently
  // allowed. See https://crbug.com/937131.
  kFeaturePolicyProposalWouldChangeBehaviour = 3158,
  kRTCLocalSdpModificationSimulcast = 3159,
  kTrustedTypesEnabledEnforcing = 3160,
  kTrustedTypesEnabledReportOnly = 3161,
  kTrustedTypesAllowDuplicates = 3162,
  kV8ArrayPrototypeHasElements = 3163,
  kV8ObjectPrototypeHasElements = 3164,
  kDisallowDocumentAccess = 3165,
  kXRSessionRequestHitTestSource = 3166,
  kXRSessionRequestHitTestSourceForTransientInput = 3167,
  kXRDOMOverlay = 3168,
  kCssStyleSheetReplaceWithImport = 3169,
  kCryptoAlgorithmEd25519 = 3170,
  kCryptoAlgorithmX25519 = 3171,
  kDisplayNames = 3172,
  kNumberFormatStyleUnit = 3173,
  kDateTimeFormatRange = 3174,
  kDateTimeFormatDateTimeStyle = 3175,
  kBreakIteratorTypeWord = 3176,
  kBreakIteratorTypeLine = 3177,
  kV8FileSystemDirectoryHandle_Resolve_Method = 3178,
  kV8FileSystemHandle_IsSameEntry_Method = 3179,
  kV8RTCRtpSender_CreateEncodedAudioStreams_Method = 3180,
  kV8RTCRtpSender_CreateEncodedVideoStreams_Method = 3181,
  kV8RTCRtpReceiver_CreateEncodedAudioStreams_Method = 3182,
  kV8RTCRtpReceiver_CreateEncodedVideoStreams_Method = 3183,
  kQuicTransport = 3184,
  kQuicTransportStreamApis = 3185,
  kQuicTransportDatagramApis = 3186,
  kV8Document_GetAnimations_Method = 3187,
  kV8ShadowRoot_GetAnimations_Method = 3188,
  kClientHintsUAFullVersion = 3189,
  kSchedulerCurrentTaskSignal = 3190,
  kThirdPartyFileSystem = 3191,
  kThirdPartyIndexedDb = 3192,
  kThirdPartyCacheStorage = 3193,
  kThirdPartyLocalStorage = 3194,
  kThirdPartySessionStorage = 3195,
  kDeclarativeShadowRoot = 3196,
  kCrossOriginOpenerPolicySameOrigin = 3197,
  kCrossOriginOpenerPolicySameOriginAllowPopups = 3198,
  kCrossOriginEmbedderPolicyRequireCorp = 3199,
  kCoopAndCoepIsolated = 3200,
  // The above items are available in M83 branch.

  kV8Document_HasTrustToken_Method = 3202,
  kForceLoadAtTop = 3203,
  kLegacyLayoutByDeprecatedFlexBox = 3205,
  kLegacyLayoutByDetailsMarker = 3206,
  kLegacyLayoutByEditing = 3207,
  kLegacyLayoutByFieldSet = 3208,
  kLegacyLayoutByFlexBox = 3210,
  kLegacyLayoutByFrameSet = 3211,
  kLegacyLayoutByGrid = 3212,
  kLegacyLayoutByMultiCol = 3214,
  kLegacyLayoutByPrinting = 3215,
  kLegacyLayoutBySVG = 3217,
  kLegacyLayoutBySlider = 3218,
  kLegacyLayoutByTable = 3219,
  kLegacyLayoutByTextCombine = 3220,
  kLegacyLayoutByTextControl = 3221,
  kLegacyLayoutByVTTCue = 3222,
  kLegacyLayoutByWebkitBoxWithoutVerticalLineClamp = 3223,
  kLegacyLayoutByTableFlexGridBlockInNGFragmentationContext = 3224,
  kDocumentPolicyHeader = 3225,
  kDocumentPolicyReportOnlyHeader = 3226,
  kRequireDocumentPolicyHeader = 3227,
  kDocumentPolicyIframePolicyAttribute = 3228,
  kDocumentPolicyCausedPageUnload = 3229,
  kRequiredDocumentPolicy = 3230,
  kPerformanceObserverEntryTypesAndBuffered = 3231,
  kPerformanceObserverTypeError = 3232,
  kImageCaptureWhiteBalanceMode = 3233,
  kImageCaptureExposureMode = 3234,
  kImageCaptureFocusMode = 3235,
  kImageCapturePointsOfInterest = 3236,
  kImageCaptureExposureCompensation = 3237,
  kImageCaptureExposureTime = 3238,
  kImageCaptureColorTemperature = 3239,
  kImageCaptureIso = 3240,
  kImageCaptureBrightness = 3241,
  kImageCaptureContrast = 3242,
  kImageCaptureSaturation = 3243,
  kImageCaptureSharpness = 3244,
  kImageCaptureFocusDistance = 3245,
  kImageCapturePan = 3246,
  kImageCaptureTilt = 3247,
  kImageCaptureZoom = 3248,
  kImageCaptureTorch = 3249,
  kXRFrameCreateAnchor = 3250,
  kXRHitTestResultCreateAnchor = 3251,
  kCSSKeywordRevert = 3252,
  kOverlayPopupAd = 3253,
  kEventTimingFirstInputExplicitlyRequested = 3254,
  kCustomScrollbarPercentThickness = 3255,
  kCustomScrollbarPartPercentLength = 3256,
  kV8InvalidatedArrayBufferDetachingProtector = 3257,
  kV8InvalidatedArrayConstructorProtector = 3258,
  kV8InvalidatedArrayIteratorLookupChainProtector = 3259,
  kV8InvalidatedArraySpeciesLookupChainProtector = 3260,
  kV8InvalidatedIsConcatSpreadableLookupChainProtector = 3261,
  kV8InvalidatedMapIteratorLookupChainProtector = 3262,
  kV8InvalidatedNoElementsProtector = 3263,
  kV8InvalidatedPromiseHookProtector = 3264,
  kV8InvalidatedPromiseResolveLookupChainProtector = 3265,
  kV8InvalidatedPromiseSpeciesLookupChainProtector = 3266,
  kV8InvalidatedPromiseThenLookupChainProtector = 3267,
  kV8InvalidatedRegExpSpeciesLookupChainProtector = 3268,
  kV8InvalidatedSetIteratorLookupChainProtector = 3269,
  kV8InvalidatedStringIteratorLookupChainProtector = 3270,
  kV8InvalidatedStringLengthOverflowLookupChainProtector = 3271,
  kV8InvalidatedTypedArraySpeciesLookupChainProtector = 3272,
  kClientHintsUAPlatformVersion = 3273,
  kIFrameCSPAttribute = 3274,
  kNavigatorCookieEnabled = 3275,
  kTrustTokenFetch = 3276,
  kTrustTokenXhr = 3277,
  kTrustTokenIframe = 3278,
  kTrustedTypesPolicyCreated = 3279,
  kV8HTMLVideoElement_RequestVideoFrameCallback_Method = 3280,
  kV8HTMLVideoElement_CancelVideoFrameCallback_Method = 3281,
  kRubyElementWithDisplayBlock = 3282,
  kOBSOLETE_LocationFragmentDirectiveAccessed = 3283,
  kCanvasRenderingContext = 3284,
  kSchemefulSameSiteContextDowngrade = 3285,
  kOriginAgentClusterHeader = 3286,
  kV8WasmSimdOpcodes = 3287,
  kGridRowGapPercent = 3288,
  kGridRowGapPercentIndefinite = 3289,
  kFlexRowGapPercent = 3290,
  kFlexRowGapPercentIndefinite = 3291,
  kV8RTCRtpSender_CreateEncodedStreams_Method = 3292,
  kV8RTCRtpReceiver_CreateEncodedStreams_Method = 3293,
  kForceEncodedAudioInsertableStreams = 3294,
  kForceEncodedVideoInsertableStreams = 3295,
  kTransformStyleContainingBlockComputedUsedMismatch = 3296,
  kOBSOLETE_AdditionalGroupingPropertiesForCompat = 3297,
  kPopupDoesNotExceedOwnerWindowBounds = 3298,
  kPopupExceedsOwnerWindowBounds = 3299,
  kPopupExceedsOwnerWindowBoundsForIframe = 3300,
  kPopupGestureTapExceedsOwnerWindowBounds = 3301,
  kPopupMouseDownExceedsOwnerWindowBounds = 3302,
  kPopupMouseWheelExceedsOwnerWindowBounds = 3303,
  kV8VarRedeclaredCatchBinding = 3304,
  kWebBluetoothRemoteCharacteristicWriteValueWithResponse = 3305,
  kWebBluetoothRemoteCharacteristicWriteValueWithoutResponse = 3306,
  kFlexGapSpecified = 3307,
  kFlexGapPositive = 3308,
  kPluginInstanceAccessSuccessful = 3309,
  kStorageAccessAPI_HasStorageAccess_Method = 3310,
  kStorageAccessAPI_requestStorageAccess_Method = 3311,
  kWebBluetoothWatchAdvertisements = 3312,
  kRubyTextWithNonDefaultTextAlign = 3313,
  kHTMLMetaElementReferrerPolicyOutsideHead = 3314,
  kHTMLMetaElementReferrerPolicyMultipleTokens = 3315,
  kDynamicImportModuleScriptRelativeClassicSameOrigin = 3318,
  kDynamicImportModuleScriptRelativeClassicCrossOrigin = 3319,
  kV8WasmBulkMemory = 3320,
  kV8WasmRefTypes = 3321,
  kV8WasmMultiValue = 3322,
  kHiddenBackfaceWithPossible3D = 3323,
  kHiddenBackfaceWithPreserve3D = 3324,
  kCSSAtRuleScrollTimeline = 3325,
  kFetchUploadStreaming = 3326,
  kWebkitLineClampWithoutWebkitBox = 3327,
  kWebBluetoothGetDevices = 3328,
  kDialogWithNonZeroScrollOffset = 3329,
  kDialogHeightLargerThanViewport = 3330,
  kOverlayPopup = 3331,
  kContentVisibilityAuto = 3332,
  kContentVisibilityHidden = 3333,
  kContentVisibilityHiddenMatchable = 3334,
  kInlineOverflowAutoWithInlineEndPadding = 3335,
  kInlineOverflowScrollWithInlineEndPadding = 3336,
  kSerialPortGetInfo = 3338,
  // The above items are available in M85 branch.

  kFileSystemPickerMethod = 3339,
  kV8Window_ShowOpenFilePicker_Method = 3340,
  kV8Window_ShowSaveFilePicker_Method = 3341,
  kV8Window_ShowDirectoryPicker_Method = 3342,
  kRTCConstraintEnableRtpDataChannelsTrue = 3344,
  kRTCConstraintEnableRtpDataChannelsFalse = 3345,
  kFileSystemAccessDragAndDrop = 3346,
  kRTCAdaptivePtime = 3347,
  kHTMLMetaElementReferrerPolicyMultipleTokensAffectingRequest = 3348,
  kNavigationTimingL2 = 3349,
  kResourceTiming = 3350,
  kV8PointerEvent_AzimuthAngle_AttributeGetter = 3351,
  kV8PointerEvent_AltitudeAngle_AttributeGetter = 3352,
  kCrossBrowsingContextGroupMainFrameNulledNonEmptyNameAccessed = 3353,
  kPositionSticky = 3354,
  kOBSOLETE_CommaSeparatorInAllowAttribute = 3355,
  kMainFrameCSPViaHTTP = 3359,
  kMainFrameCSPViaMeta = 3360,
  kMainFrameCSPViaOriginPolicy = 3361,
  kHtmlClipboardApiRead = 3362,
  kHtmlClipboardApiWrite = 3363,
  kCSSSystemColorComputeToSelf = 3364,
  kConversionAPIAll = 3365,
  kImpressionRegistration = 3366,
  kConversionRegistration = 3367,
  kWebSharePolicyAllow = 3368,
  kWebSharePolicyDisallow = 3369,
  kFormAssociatedCustomElement = 3370,
  kWindowClosed = 3371,
  kWrongBaselineOfMultiLineButton = 3372,
  kWrongBaselineOfEmptyLineButton = 3373,
  kV8RTCRtpTransceiver_Stopped_AttributeGetter = 3374,
  kV8RTCRtpTransceiver_Stop_Method = 3375,
  kSecurePaymentConfirmation = 3376,
  kCSSInvalidVariableUnset = 3377,
  kElementInternalsShadowRoot = 3378,
  kAnyPiiFieldDetected_PredictedTypeMatch = 3379,
  kEmailFieldDetected_PredictedTypeMatch = 3380,
  kPhoneFieldDetected_PredictedTypeMatch = 3381,
  kEmailFieldDetected_PatternMatch = 3382,
  kLastLetterSpacingAffectsRendering = 3383,
  kV8FontMetadata_GetTables_Method = 3384,
  kV8FontMetadata_Blob_Method = 3385,
  kV8FontManager_Query_Method = 3386,
  kAudioContextBaseLatency = 3387,
  kV8Window_GetScreens_Method = 3388,
  kV8Window_IsMultiScreen_Method = 3389,
  kV8Window_Onscreenschange_AttributeGetter = 3390,
  kV8Window_Onscreenschange_AttributeSetter = 3391,
  kDOMWindowOpenPositioningFeaturesCrossScreen = 3392,
  kDOMWindowSetWindowRectCrossScreen = 3393,
  kFullscreenCrossScreen = 3394,
  kBatterySavingsMeta = 3395,
  kDigitalGoodsGetDigitalGoodsService = 3396,
  kDigitalGoodsGetDetails = 3397,
  kDigitalGoodsAcknowledge = 3398,
  kMediaRecorder_MimeType = 3399,
  kMediaRecorder_VideoBitsPerSecond = 3400,
  kMediaRecorder_AudioBitsPerSecond = 3401,
  kOBSOLETE_BluetoothRemoteGATTCharacteristic_Uuid = 3402,
  kOBSOLETE_BluetoothRemoteGATTDescriptor_Uuid = 3403,
  kOBSOLETE_BluetoothRemoteGATTService_Uuid = 3404,
  kGPUAdapter_Name = 3405,
  kWindowScreenInternal = 3406,
  kWindowScreenPrimary = 3407,
  kThirdPartyCookieRead = 3408,
  kThirdPartyCookieWrite = 3409,
  kRTCLegacyRtpDataChannelNegotiated = 3410,
  kCrossSitePostMessage = 3411,
  kSchemelesslySameSitePostMessage = 3412,
  kSchemefulSameSitePostMessage = 3413,
  kUnspecifiedTargetOriginPostMessage = 3414,
  kSchemelesslySameSitePostMessageSecureToInsecure = 3415,
  kSchemelesslySameSitePostMessageInsecureToSecure = 3416,
  kOBSOLETE_BCPBroadcast = 3417,
  kOBSOLETE_BCPRead = 3418,
  kOBSOLETE_BCPWriteWithoutResponse = 3419,
  kOBSOLETE_BCPWrite = 3420,
  kOBSOLETE_BCPNotify = 3421,
  kOBSOLETE_BCPIndicate = 3422,
  kOBSOLETE_BCPAuthenticatedSignedWrites = 3423,
  kOBSOLETE_BCPReliableWrite = 3424,
  kOBSOLETE_BCPWritableAuxiliaries = 3425,
  kTextAlignSpecifiedToLegend = 3426,
  kV8Document_FragmentDirective_AttributeGetter = 3427,
  kV8StorageManager_GetDirectory_Method = 3428,
  kBeforematchHandlerRegistered = 3429,
  kBluetoothAdvertisingEventName = 3430,
  kBluetoothAdvertisingEventAppearance = 3431,
  kBluetoothAdvertisingEventTxPower = 3432,
  kCrossOriginOpenerPolicyReporting = 3433,
  kGamepadId = 3434,
  kElementAttachInternals = 3435,
  kBluetoothDeviceName = 3436,
  kRTCIceCandidateAddress = 3437,
  kRTCIceCandidateCandidate = 3438,
  kRTCIceCandidatePort = 3439,
  kRTCIceCandidateRelatedAddress = 3440,
  kRTCIceCandidateRelatedPort = 3441,
  kSlotAssignNode = 3442,
  kPluginName = 3443,
  kPluginFilename = 3444,
  kPluginDescription = 3445,
  kSubresourceWebBundles = 3446,
  kRTCPeerConnectionSetRemoteDescriptionPromise = 3447,
  kRTCPeerConnectionSetLocalDescriptionPromise = 3448,
  kRTCPeerConnectionCreateOfferPromise = 3449,
  kRTCPeerConnectionCreateAnswerPromise = 3450,
  kRTCPeerConnectionSetRemoteDescription = 3451,
  kRTCPeerConnectionSetLocalDescription = 3452,
  kRTCPeerConnectionCreateOffer = 3453,
  kRTCPeerConnectionCreateAnswer = 3454,
  kV8AuthenticatorAttestationResponse_GetTransports_Method = 3455,
  kWebCodecsAudioDecoder = 3456,
  kWebCodecsVideoDecoder = 3457,
  kWebCodecsVideoEncoder = 3458,
  kWebCodecsVideoTrackReader = 3459,
  kWebCodecsImageDecoder = 3460,
  kBackForwardCacheExperimentHTTPHeader = 3461,
  kV8Navigator_OpenTCPSocket_Method = 3462,
  kV8Navigator_OpenUDPSocket_Method = 3463,
  kWebCodecs = 3464,
  kCredentialManagerCrossOriginPublicKeyGetRequest = 3465,
  kCSSContainStrictWithoutContentVisibility = 3466,
  kCSSContainAllWithoutContentVisibility = 3467,
  kTimerInstallFromBeforeUnload = 3468,
  kTimerInstallFromUnload = 3469,
  kOBSOLETE_ElementAttachInternalsBeforeConstructor = 3470,
  kSMILElementHasRepeatNEventListener = 3471,
  // The above items are available in M86 branch.

  kWebTransport = 3472,
  kIdleDetectionPermissionRequested = 3477,
  kIdentifiabilityStudyReserved3478 = 3478,
  kSpeechSynthesis_GetVoices_Method = 3479,
  kIdentifiabilityStudyReserved3480 = 3480,
  kV8Navigator_JavaEnabled_Method = 3481,
  kIdentifiabilityStudyReserved3482 = 3482,
  kIdentifiabilityStudyReserved3483 = 3483,
  kIdentifiabilityStudyReserved3484 = 3484,
  kIdentifiabilityStudyReserved3485 = 3485,
  kIdentifiabilityStudyReserved3486 = 3486,
  kIdentifiabilityStudyReserved3487 = 3487,
  kIdentifiabilityStudyReserved3488 = 3488,
  kIdentifiabilityStudyReserved3489 = 3489,
  kIdentifiabilityStudyReserved3490 = 3490,
  kIdentifiabilityStudyReserved3491 = 3491,
  kIdentifiabilityStudyReserved3492 = 3492,
  kIdentifiabilityStudyReserved3493 = 3493,
  kIdentifiabilityStudyReserved3494 = 3494,
  kIdentifiabilityStudyReserved3495 = 3495,
  kIdentifiabilityStudyReserved3496 = 3496,
  kIdentifiabilityStudyReserved3497 = 3497,
  kIdentifiabilityStudyReserved3498 = 3498,
  kV8BackgroundFetchRegistration_FailureReason_AttributeGetter = 3499,
  kV8Document_ElementFromPoint_Method = 3500,
  kV8Document_ElementsFromPoint_Method = 3501,
  kV8ShadowRoot_ElementFromPoint_Method = 3502,
  kV8ShadowRoot_ElementsFromPoint_Method = 3503,
  kWindowScreenTouchSupport = 3504,
  kIdentifiabilityStudyReserved3505 = 3505,
  kIdentifiabilityStudyReserved3506 = 3506,
  kV8PushManager_SupportedContentEncodings_AttributeGetter = 3507,
  kIdentifiabilityStudyReserved3508 = 3508,
  kV8RTCRtpReceiver_GetCapabilities_Method = 3509,
  kV8RTCRtpSender_GetCapabilities_Method = 3510,
  kIdentifiabilityStudyReserved3511 = 3511,
  kIdentifiabilityStudyReserved3512 = 3512,
  kIdentifiabilityStudyReserved3513 = 3513,
  kIdentifiabilityStudyReserved3514 = 3514,
  kIdentifiabilityStudyReserved3515 = 3515,
  kIdentifiabilityStudyReserved3516 = 3516,
  kIdentifiabilityStudyReserved3517 = 3517,
  kIdentifiabilityStudyReserved3518 = 3518,
  kIdentifiabilityStudyReserved3519 = 3519,
  kIdentifiabilityStudyReserved3520 = 3520,
  kIdentifiabilityStudyReserved3521 = 3521,
  kIdentifiabilityStudyReserved3522 = 3522,
  kIdentifiabilityStudyReserved3523 = 3523,
  kIdentifiabilityStudyReserved3524 = 3524,
  kIdentifiabilityStudyReserved3525 = 3525,
  kIdentifiabilityStudyReserved3526 = 3526,
  kIdentifiabilityStudyReserved3527 = 3527,
  kIdentifiabilityStudyReserved3528 = 3528,
  kIdentifiabilityStudyReserved3529 = 3529,
  kIdentifiabilityStudyReserved3530 = 3530,
  kIdentifiabilityStudyReserved3531 = 3531,
  kIdentifiabilityStudyReserved3532 = 3532,
  kIdentifiabilityStudyReserved3533 = 3533,
  kIdentifiabilityStudyReserved3534 = 3534,
  kIdentifiabilityStudyReserved3535 = 3535,
  kIdentifiabilityStudyReserved3536 = 3536,
  kIdentifiabilityStudyReserved3537 = 3537,
  kIdentifiabilityStudyReserved3538 = 3538,
  kIdentifiabilityStudyReserved3539 = 3539,
  kIdentifiabilityStudyReserved3540 = 3540,
  kV8WheelEvent_DeltaMode_AttributeGetter = 3541,
  kV8Touch_Force_AttributeGetter = 3542,
  kWebGLRenderingContextMakeXRCompatible = 3543,
  kV8WebGLCompressedTextureASTC_GetSupportedProfiles_Method = 3544,
  kHTMLCanvasGetContext = 3545,
  kV8BeforeInstallPromptEvent_Platforms_AttributeGetter = 3546,
  kIdentifiabilityStudyReserved3547 = 3547,
  kIdentifiabilityStudyReserved3548 = 3548,
  kIdentifiabilityStudyReserved3549 = 3549,
  kIdentifiabilityStudyReserved3550 = 3550,
  kIdentifiabilityStudyReserved3551 = 3551,
  kIdentifiabilityStudyReserved3552 = 3552,
  kIdentifiabilityStudyReserved3553 = 3553,
  kIdentifiabilityStudyReserved3554 = 3554,
  kIdentifiabilityStudyReserved3555 = 3555,
  kIdentifiabilityStudyReserved3556 = 3556,
  kIdentifiabilityStudyReserved3557 = 3557,
  kIdentifiabilityStudyReserved3558 = 3558,
  kIdentifiabilityStudyReserved3559 = 3559,
  kIdentifiabilityStudyReserved3560 = 3560,
  kIdentifiabilityStudyReserved3561 = 3561,
  kIdentifiabilityStudyReserved3562 = 3562,
  kIdentifiabilityStudyReserved3563 = 3563,
  kIdentifiabilityStudyReserved3564 = 3564,
  kIdentifiabilityStudyReserved3565 = 3565,
  kV8BaseAudioContext_SampleRate_AttributeGetter = 3566,
  kWindowScreenId = 3567,
  kWebGLRenderingContextGetParameter = 3568,
  kWebGLRenderingContextGetRenderbufferParameter = 3569,
  kWebGLRenderingContextGetShaderPrecisionFormat = 3570,
  kWebGL2RenderingContextGetInternalFormatParameter = 3571,
  kIdentifiabilityStudyReserved3572 = 3572,
  kIdentifiabilityStudyReserved3573 = 3573,
  kIdentifiabilityStudyReserved3574 = 3574,
  kIdentifiabilityStudyReserved3575 = 3575,
  kIdentifiabilityStudyReserved3576 = 3576,
  kIdentifiabilityStudyReserved3577 = 3577,
  kCascadedCSSZoomNotEqualToOne = 3578,
  kForcedDarkMode = 3579,
  kPreferredColorSchemeDark = 3580,
  kPreferredColorSchemeDarkSetting = 3581,
  kIdentifiabilityStudyReserved3582 = 3582,
  kIdentifiabilityStudyReserved3583 = 3583,
  kIdentifiabilityStudyReserved3584 = 3584,
  kIdentifiabilityStudyReserved3585 = 3585,
  kIdentifiabilityStudyReserved3586 = 3586,
  kIdentifiabilityStudyReserved3587 = 3587,
  kIdentifiabilityStudyReserved3588 = 3588,
  kIdentifiabilityStudyReserved3589 = 3589,
  kIdentifiabilityStudyReserved3590 = 3590,
  kIdentifiabilityStudyReserved3591 = 3591,
  kIdentifiabilityStudyReserved3592 = 3592,
  kIdentifiabilityStudyReserved3593 = 3593,
  kIdentifiabilityStudyReserved3594 = 3594,
  kIdentifiabilityStudyReserved3595 = 3595,
  kIdentifiabilityStudyReserved3596 = 3596,
  kIdentifiabilityStudyReserved3597 = 3597,
  kIdentifiabilityStudyReserved3598 = 3598,
  kIdentifiabilityStudyReserved3599 = 3599,
  kIdentifiabilityStudyReserved3600 = 3600,
  kIdentifiabilityStudyReserved3601 = 3601,
  kIdentifiabilityStudyReserved3602 = 3602,
  kIdentifiabilityStudyReserved3603 = 3603,
  kIdentifiabilityStudyReserved3604 = 3604,
  kIdentifiabilityStudyReserved3605 = 3605,
  kIdentifiabilityStudyReserved3606 = 3606,
  kIdentifiabilityStudyReserved3607 = 3607,
  kIdentifiabilityStudyReserved3608 = 3608,
  kIdentifiabilityStudyReserved3609 = 3609,
  kBarcodeDetector_GetSupportedFormats = 3610,
  kIdentifiabilityStudyReserved3611 = 3611,
  kIdentifiabilityStudyReserved3612 = 3612,
  kIdentifiabilityStudyReserved3613 = 3613,
  kIdentifiabilityStudyReserved3614 = 3614,
  kIdentifiabilityStudyReserved3615 = 3615,
  kIdentifiabilityStudyReserved3616 = 3616,
  kIdentifiabilityStudyReserved3617 = 3617,
  kIdentifiabilityStudyReserved3618 = 3618,
  kIdentifiabilityStudyReserved3619 = 3619,
  kIdentifiabilityStudyReserved3620 = 3620,
  kIdentifiabilityStudyReserved3621 = 3621,
  kIdentifiabilityStudyReserved3622 = 3622,
  kIdentifiabilityStudyReserved3623 = 3623,
  kIdentifiabilityStudyReserved3624 = 3624,
  kIdentifiabilityStudyReserved3625 = 3625,
  kIdentifiabilityStudyReserved3626 = 3626,
  kIdentifiabilityStudyReserved3627 = 3627,
  kIdentifiabilityStudyReserved3628 = 3628,
  kIdentifiabilityStudyReserved3629 = 3629,
  kIdentifiabilityStudyReserved3630 = 3630,
  kIdentifiabilityStudyReserved3631 = 3631,
  kIdentifiabilityStudyReserved3632 = 3632,
  kIdentifiabilityStudyReserved3633 = 3633,
  kIdentifiabilityStudyReserved3634 = 3634,
  kIdentifiabilityStudyReserved3635 = 3635,
  kIdentifiabilityStudyReserved3636 = 3636,
  kIdentifiabilityStudyReserved3637 = 3637,
  kIdentifiabilityStudyReserved3638 = 3638,
  kIdentifiabilityStudyReserved3639 = 3639,
  kIdentifiabilityStudyReserved3640 = 3640,
  kIdentifiabilityStudyReserved3641 = 3641,
  kIdentifiabilityStudyReserved3642 = 3642,
  kIdentifiabilityStudyReserved3643 = 3643,
  kIdentifiabilityStudyReserved3644 = 3644,
  kIdentifiabilityStudyReserved3645 = 3645,
  kIdentifiabilityStudyReserved3646 = 3646,
  kIdentifiabilityStudyReserved3647 = 3647,
  kIdentifiabilityStudyReserved3648 = 3648,
  kIdentifiabilityStudyReserved3649 = 3649,
  kIdentifiabilityStudyReserved3650 = 3650,
  kIdentifiabilityStudyReserved3651 = 3651,
  kIdentifiabilityStudyReserved3652 = 3652,
  kIdentifiabilityStudyReserved3653 = 3653,
  kIdentifiabilityStudyReserved3654 = 3654,
  kIdentifiabilityStudyReserved3655 = 3655,
  kIdentifiabilityStudyReserved3656 = 3656,
  kIdentifiabilityStudyReserved3657 = 3657,
  kIdentifiabilityStudyReserved3658 = 3658,
  kIdentifiabilityStudyReserved3659 = 3659,
  kIdentifiabilityStudyReserved3660 = 3660,
  kIdentifiabilityStudyReserved3661 = 3661,
  kIdentifiabilityStudyReserved3662 = 3662,
  kIdentifiabilityStudyReserved3663 = 3663,
  kIdentifiabilityStudyReserved3664 = 3664,
  kIdentifiabilityStudyReserved3665 = 3665,
  kIdentifiabilityStudyReserved3666 = 3666,
  kIdentifiabilityStudyReserved3667 = 3667,
  kIdentifiabilityStudyReserved3668 = 3668,
  kIdentifiabilityStudyReserved3669 = 3669,
  kIdentifiabilityStudyReserved3670 = 3670,
  kIdentifiabilityStudyReserved3671 = 3671,
  kIdentifiabilityStudyReserved3672 = 3672,
  kIdentifiabilityStudyReserved3673 = 3673,
  kIdentifiabilityStudyReserved3674 = 3674,
  kIdentifiabilityStudyReserved3675 = 3675,
  kIdentifiabilityStudyReserved3676 = 3676,
  kIdentifiabilityStudyReserved3677 = 3677,
  kIdentifiabilityStudyReserved3678 = 3678,
  kIdentifiabilityStudyReserved3679 = 3679,
  kIdentifiabilityStudyReserved3680 = 3680,
  kIdentifiabilityStudyReserved3681 = 3681,
  kUndeferrableThirdPartySubresourceRequestWithCookie = 3682,
  kXRDepthSensing = 3683,
  kXRFrameGetDepthInformation = 3684,
  kXRDepthInformationGetDepth = 3685,
  kXRDepthInformationDataAttribute = 3686,
  kInterestCohortAPI_interestCohort_Method = 3687,
  kOBSOLETE_AddressSpaceLocalEmbeddedInPrivateSecureContext = 3688,
  kOBSOLETE_AddressSpaceLocalEmbeddedInPrivateNonSecureContext = 3689,
  kOBSOLETE_AddressSpaceLocalEmbeddedInPublicSecureContext = 3690,
  kOBSOLETE_AddressSpaceLocalEmbeddedInPublicNonSecureContext = 3691,
  kOBSOLETE_AddressSpaceLocalEmbeddedInUnknownSecureContext = 3692,
  kOBSOLETE_AddressSpaceLocalEmbeddedInUnknownNonSecureContext = 3693,
  kOBSOLETE_AddressSpacePrivateEmbeddedInPublicSecureContext = 3694,
  kOBSOLETE_AddressSpacePrivateEmbeddedInPublicNonSecureContext = 3695,
  kOBSOLETE_AddressSpacePrivateEmbeddedInUnknownSecureContext = 3696,
  kOBSOLETE_AddressSpacePrivateEmbeddedInUnknownNonSecureContext = 3697,
  // The items above roughly this point are available in the M87 branch.

  kThirdPartyAccess = 3698,
  kThirdPartyActivation = 3699,
  kThirdPartyAccessAndActivation = 3700,
  kFullscreenAllowedByScreensChange = 3701,
  kNewLayoutOverflowDifferentBlock = 3702,
  kNewLayoutOverflowDifferentFlex = 3703,
  kNewLayoutOverflowDifferentAndAlreadyScrollsBlock = 3704,
  kNewLayoutOverflowDifferentAndAlreadyScrollsFlex = 3705,
  kUnicodeBidiPlainText = 3706,
  kColorSchemeDarkSupportedOnRoot = 3707,
  kWebBluetoothGetAvailability = 3708,
  kDigitalGoodsListPurchases = 3709,
  kCompositedSVG = 3710,
  kBarcodeDetectorDetect = 3711,
  kFaceDetectorDetect = 3712,
  kTextDetectorDetect = 3713,
  kLocalStorageFirstUsedBeforeFcp = 3714,
  kLocalStorageFirstUsedAfterFcp = 3715,
  kCSSPseudoHostCompoundList = 3716,
  kCSSPseudoHostContextCompoundList = 3717,
  kCSSPseudoHostDynamicSpecificity = 3718,
  kGetCurrentBrowsingContextMedia = 3719,
  kMouseEventRelativePositionForInlineElement = 3720,
  kV8SharedArrayBufferConstructedWithoutIsolation = 3721,
  kV8HTMLVideoElement_GetVideoPlaybackQuality_Method = 3722,
  kXRWebGLBindingGetReflectionCubeMap = 3723,
  kXRFrameGetLightEstimate = 3724,
  kV8HTMLDialogElement_Show_Method = 3725,
  kV8HTMLDialogElement_ShowModal_Method = 3726,
  kAdFrameDetected = 3727,
  kMediaStreamTrackGenerator = 3728,
  kMediaStreamTrackProcessor = 3729,
  kAddEventListenerWithAbortSignal = 3730,
  kXRSessionRequestLightProbe = 3731,
  // The items above roughly this point are available in the M88 branch.

  kBeforematchRevealedHiddenMatchable = 3732,
  kAddSourceBufferUsingConfig = 3733,
  kChangeTypeUsingConfig = 3734,
  kV8SourceBuffer_AppendEncodedChunks_Method = 3735,
  kOversrollBehaviorOnViewportBreaks = 3736,
  kSameOriginJsonTypeForScript = 3737,
  kCrossOriginJsonTypeForScript = 3738,
  kSameOriginStrictNosniffWouldBlock = 3739,
  kCrossOriginStrictNosniffWouldBlock = 3740,
  kCSSSelectorPseudoDir = 3741,
  kCrossOriginSubframeWithoutEmbeddingControl = 3742,
  kReadableStreamWithByteSource = 3743,
  kReadableStreamBYOBReader = 3744,
  kSamePartyCookieAttribute = 3746,
  kSamePartyCookieExclusionOverruledSameSite = 3747,
  kSamePartyCookieInclusionOverruledSameSite = 3748,
  kEmbedElementWithoutTypeSrcChanged = 3749,
  kPaymentHandlerStandardizedPaymentMethodIdentifier = 3750,
  kWebCodecsAudioEncoder = 3751,
  kEmbeddedCrossOriginFrameWithoutFrameAncestorsOrXFO = 3752,
  kAddressSpacePrivateSecureContextEmbeddedLocal = 3753,
  kAddressSpacePrivateNonSecureContextEmbeddedLocal = 3754,
  kAddressSpacePublicSecureContextEmbeddedLocal = 3755,
  kAddressSpacePublicNonSecureContextEmbeddedLocal = 3756,
  kAddressSpacePublicSecureContextEmbeddedPrivate = 3757,
  kAddressSpacePublicNonSecureContextEmbeddedPrivate = 3758,
  kAddressSpaceUnknownSecureContextEmbeddedLocal = 3759,
  kAddressSpaceUnknownNonSecureContextEmbeddedLocal = 3760,
  kAddressSpaceUnknownSecureContextEmbeddedPrivate = 3761,
  kAddressSpaceUnknownNonSecureContextEmbeddedPrivate = 3762,
  kAddressSpacePrivateSecureContextNavigatedToLocal = 3763,
  kAddressSpacePrivateNonSecureContextNavigatedToLocal = 3764,
  kAddressSpacePublicSecureContextNavigatedToLocal = 3765,
  kAddressSpacePublicNonSecureContextNavigatedToLocal = 3766,
  kAddressSpacePublicSecureContextNavigatedToPrivate = 3767,
  kAddressSpacePublicNonSecureContextNavigatedToPrivate = 3768,
  kAddressSpaceUnknownSecureContextNavigatedToLocal = 3769,
  kAddressSpaceUnknownNonSecureContextNavigatedToLocal = 3770,
  kAddressSpaceUnknownSecureContextNavigatedToPrivate = 3771,
  kAddressSpaceUnknownNonSecureContextNavigatedToPrivate = 3772,
  kRTCPeerConnectionSdpSemanticsPlanB = 3773,
  kFetchRespondWithNoResponseWithUsedRequestBody = 3774,
  kV8TCPSocket_Close_Method = 3775,
  kV8TCPSocket_Readable_AttributeGetter = 3776,
  kV8TCPSocket_Writable_AttributeGetter = 3777,
  kV8TCPSocket_RemoteAddress_AttributeGetter = 3778,
  kV8TCPSocket_RemotePort_AttributeGetter = 3779,
  kCSSSelectorTargetText = 3780,

  // Add new features immediately above this line. Don't change assigned
  // numbers of any item, and don't reuse removed slots.
  // Also, run update_use_counter_feature_enum.py in
  // chromium/src/tools/metrics/histograms/ to update the UMA mapping.
  // TODO(dcheng): Fix https://crbug.com/742517 and use the autogenerated
  // constants.
  kNumberOfFeatures,  // This enum value must be last.
};