Expose UseCounter::Feature enum out of blink as WebFeature

third_party/WebKit/public/platform/UseCounterFeature.def

Index: third_party/WebKit/public/platform/UseCounterFeature.def
diff --git a/third_party/WebKit/public/platform/UseCounterFeature.def b/third_party/WebKit/public/platform/UseCounterFeature.def
new file mode 100644
index 0000000000000000000000000000000000000000..48c769e60b6096d8c14f659d85a8d21ba8626749
--- /dev/null
+++ b/third_party/WebKit/public/platform/UseCounterFeature.def
@@ -0,0 +1,1557 @@
+// ============ Definition for WebFeature used for UseCounter ===============
+// A WebFeature conceptually represents some particular web-exposed API
+// or code path which can be used/triggered by a web page.
+// TODO(lunalu): Replace occurance of UseCounter::Feature by WebFeature in
+// Blink.
+// TODO(rbyers): Add CSS and animated CSS feature types by making this a
+// more sophisticated class.
+//
+// Do not change assigned numbers of existing items: add new features
+// to the end of the list.
+kOBSOLETE_PageDestruction = 0,
+kWorkerStart = 4,
+kSharedWorkerStart = 5,
+kUnprefixedIndexedDB = 9,
+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,
+kUnprefixedPerformanceTimeline = 65,
+kUnprefixedUserTiming = 67,
+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,
+kConsoleMarkTimeline = 102,
+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,
+kDocumentAllLegacyCall = 150,
+kGetMatchedCSSRules = 155,
+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,
+kWorkerSubjectToCSP = 257,
+kWorkerAllowedByChildBlockedByScript = 258,
+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,
+kAnimationConstructorKeyframeListEffectObjectTiming = 300,
+kAnimationConstructorKeyframeListEffectNoTiming = 302,
+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,
+kElementCreateShadowRoot = 456,
+kDocumentRegisterElement = 457,
+kEditingAppleInterchangeNewline = 458,
+kEditingAppleConvertedSpace = 459,
+kEditingApplePasteAsQuotation = 460,
+kEditingAppleStyleSpanClass = 461,
+kHTMLImportsAsyncAttribute = 463,
+kXMLHttpRequestSynchronous = 465,
+kCSSSelectorPseudoUnresolved = 466,
+kCSSSelectorPseudoShadow = 467,
+kCSSSelectorPseudoContent = 468,
+kCSSSelectorPseudoHost = 469,
+kCSSSelectorPseudoHostContext = 470,
+kCSSDeepCombinator = 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,
+kConsoleTimeline = 538,
+kConsoleTimelineEnd = 539,
+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.
+
+kDeviceMotionInsecureOrigin = 668,
+kDeviceMotionSecureOrigin = 669,
+kDeviceOrientationInsecureOrigin = 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,
+kUpgradeInsecureRequestsUpgradedRequest = 741,
+kDocumentDesignMode = 742,
+kGlobalCacheStorage = 743,
+kNetInfo = 744,
+kBackgroundSync = 745,
+kLegacyConst = 748,
+kV8Permissions_Query_Method = 750,
+// The above items are available in M43 branch.
+
+kV8HTMLInputElement_Autocapitalize_AttributeGetter = 754,
+kV8HTMLInputElement_Autocapitalize_AttributeSetter = 755,
+kV8HTMLTextAreaElement_Autocapitalize_AttributeGetter = 756,
+kV8HTMLTextAreaElement_Autocapitalize_AttributeSetter = 757,
+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,
+kPerformanceFrameTiming = 772,
+kV8Element_Animate_Method = 773,
+// The above items are available in M44 branch.
+
+kV8SVGSVGElement_GetElementById_Method = 778,
+kElementCreateShadowRootMultiple = 779,
+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 = 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,
+kV8Document_CreateTouch_Method = 874,
+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.
+
+kHTMLImportsHasStyleSheets = 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,
+kBackspaceNavigatedBack = 957,
+kBackspaceNavigatedBackAfterFormInteraction = 958,
+kCSPSourceWildcardWouldMatchExactHost = 959,
+kCredentialManagerGet = 960,
+kCredentialManagerGetMediationOptional = 961,
+kCredentialManagerGetMediationSilent = 962,
+kCredentialManagerStore = 963,
+kCredentialManagerRequireUserMediation = 964,
+// The above items are available in M47 branch.
+
+kBlockableMixedContentInSubframeBlocked = 966,
+kAddEventListenerThirdArgumentIsObject = 967,
+kRemoveEventListenerThirdArgumentIsObject = 968,
+kCSSAtRuleCharset = 969,
+kCSSAtRuleFontFace = 970,
+kCSSAtRuleImport = 971,
+kCSSAtRuleKeyframes = 972,
+kCSSAtRuleMedia = 973,
+kCSSAtRuleNamespace = 974,
+kCSSAtRulePage = 975,
+kCSSAtRuleSupports = 976,
+kCSSAtRuleViewport = 977,
+kCSSAtRuleWebkitKeyframes = 978,
+kV8HTMLFieldSetElement_Elements_AttributeGetter = 979,
+kHTMLMediaElementPreloadForcedNone = 980,
+kExternalAddSearchProvider = 981,
+kExternalIsSearchProviderInstalled = 982,
+kV8Permissions_RequestAll_Method = 983,
+kDeviceOrientationAbsoluteInsecureOrigin = 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,
+kNonSecureSharedWorkerAccessedFromSecureContext = 1120,
+kSecureSharedWorkerAccessedFromNonSecureContext = 1121,
+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 = 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,
+kCSSSelectorPseudoAny = 1250,
+kDocumentAllItemNoArguments = 1252,
+kDocumentAllItemNamed = 1253,
+kDocumentAllItemIndexed = 1254,
+kDocumentAllItemIndexedWithNonNumber = 1255,
+kDocumentAllLegacyCallNoArguments = 1256,
+kDocumentAllLegacyCallNamed = 1257,
+kDocumentAllLegacyCallIndexed = 1258,
+kDocumentAllLegacyCallIndexedWithNonNumber = 1259,
+kDocumentAllLegacyCallTwoArguments = 1260,
+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,
+kImageDocument = 1274,
+kScriptPassesCSPDynamic = 1275,
+kCSPWithStrictDynamic = 1277,
+kScrollAnchored = 1278,
+kAddEventListenerFourArguments = 1279,
+kRemoveEventListenerFourArguments = 1280,
+kSVGCalcModeDiscrete = 1287,
+kSVGCalcModeLinear = 1288,
+kSVGCalcModePaced = 1289,
+kSVGCalcModeSpline = 1290,
+kFormSubmissionStarted = 1291,
+kFormValidationStarted = 1292,
+kFormValidationAbortedSubmission = 1293,
+kFormValidationShowedMessage = 1294,
+kWebAnimationsEasingAsFunctionLinear = 1295,
+kWebAnimationsEasingAsFunctionOther = 1296,
+// 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,
+kXMLHttpRequestCrossOriginWithCredentials = 1305,
+kMediaStreamTrackRemote = 1306,
+kV8Node_IsConnected_AttributeGetter = 1307,
+kShadowRootDelegatesFocus = 1308,
+kMixedShadowRootV0AndV1 = 1309,
+kImageDocumentInFrame = 1310,
+kMediaDocument = 1311,
+kMediaDocumentInFrame = 1312,
+kPluginDocument = 1313,
+kPluginDocumentInFrame = 1314,
+kSinkDocument = 1315,
+kSinkDocumentInFrame = 1316,
+kTextDocument = 1317,
+kTextDocumentInFrame = 1318,
+kViewSourceDocument = 1319,
+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,
+kCSSValueAppearanceCaret = 1355,
+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,
+kCSSDeepCombinatorAndShadow = 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,
+kDocumentOpen = 1420,
+kElementRequestPointerLockInShadow = 1421,
+kShadowRootPointerLockElement = 1422,
+kDocumentPointerLockElementInV0Shadow = 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,
+kSummaryElementWithDisplayBlockAuthorRule = 1434,
+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,
+kCSSValueAppearanceButtonRendered = 1469,
+kCSSValueAppearanceButtonForAnchor = 1470,
+kCSSValueAppearanceButtonForButton = 1471,
+kCSSValueAppearanceButtonForOtherButtons = 1472,
+kCSSValueAppearanceTextFieldRendered = 1473,
+kCSSValueAppearanceTextFieldForSearch = 1474,
+kCSSValueAppearanceTextFieldForTextField = 1475,
+kRTCPeerConnectionGetStats = 1476,
+kSVGSMILAnimationAppliedEffect = 1477,
+kPerformanceResourceTimingSizes = 1478,
+kEventSourceDocument = 1479,
+kEventSourceWorker = 1480,
+kSingleOriginInTimingAllowOrigin = 1481,
+kMultipleOriginsInTimingAllowOrigin = 1482,
+kStarInTimingAllowOrigin = 1483,
+kSVGSMILAdditiveAnimation = 1484,
+kSendBeaconWithNonSimpleContentType = 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,
+kForeignFetchInterception = 1509,
+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,
+kMetaSetCookie = 1547,
+kMetaRefresh = 1548,
+kMetaSetCookieWhenCSPBlocksInlineScript = 1549,
+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,
+kDocumentCreateTouchWindowNull = 1607,
+kDocumentCreateTouchWindowWrongType = 1608,
+kDocumentCreateTouchTargetNull = 1609,
+kDocumentCreateTouchTargetWrongType = 1610,
+kDocumentCreateTouchMoreThanSevenArguments = 1612,
+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_GetStreamById_Method = 1645,
+kV8RTCPeerConnection_RemoveStream_Method = 1646,
+kRTCPeerConnectionCreateDataChannelMaxRetransmitTime = 1648,
+kRTCPeerConnectionCreateDataChannelMaxRetransmits = 1649,
+kAudioContextCreateConstantSource = 1650,
+kWebAudioConstantSourceNode = 1651,
+kLoopbackEmbeddedInSecureContext = 1652,
+kLoopbackEmbeddedInNonSecureContext = 1653,
+kBlinkMacSystemFont = 1654,
+kRTCIceServerURL = 1656,
+kRTCIceServerURLs = 1657,
+kOffscreenCanvasTransferToImageBitmap2D = 1658,
+kOffscreenCanvasTransferToImageBitmapWebGL = 1659,
+kOffscreenCanvasCommit2D = 1660,
+kOffscreenCanvasCommitWebGL = 1661,
+kRTCConfigurationIceTransportPolicy = 1662,
+kRTCConfigurationIceTransports = 1664,
+kDocumentFullscreenElementInV0Shadow = 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,
+kCSSShadowPiercingDescendantCombinator = 1691,
+// 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,
+kScrollbarUseVerticalScrollbarThumb = 1778,
+kScrollbarUseVerticalScrollbarTrack = 1779,
+kScrollbarUseHorizontalScrollbarButton = 1780,
+kScrollbarUseHorizontalScrollbarThumb = 1781,
+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,
+kWebNFCPush = 1793,
+kWebNFCCancelPush = 1794,
+kWebNFCWatch = 1795,
+kWebNFCCancelWatch = 1796,
+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,
+kUncancelableTouchEventPreventDefaulted = 1813,
+kUncancelableTouchEventDueToMainThreadResponsivenessPreventDefaulted = 1814,
+kV8HTMLVideoElement_Poster_AttributeGetter = 1815,
+kV8HTMLVideoElement_Poster_AttributeSetter = 1816,
+kNotificationPermissionRequestedIframe = 1817,
+kPresentationReceiverInsecureOrigin = 1819,
+kPresentationReceiverSecureOrigin = 1820,
+kPresentationRequestInsecureOrigin = 1821,
+kPresentationRequestSecureOrigin = 1822,
+kRtcpMuxPolicyNegotiate = 1823,
+kDOMClobberedVariableAccessed = 1824,
+kHTMLDocumentCreateProcessingInstruction = 1825,
+kFetchResponseConstructionWithStream = 1826,
+kLocationOrigin = 1827,
+kDocumentOrigin = 1828,
+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,
+kChildSrcAllowedWorkerThatScriptSrcBlocked = 1868,
+kHTMLTableElementPresentationAttributeBackground = 1869,
+kV8Navigator_GetInstalledRelatedApps_Method = 1870,
+kNamedAccessOnWindow_ChildBrowsingContext = 1871,
+kNamedAccessOnWindow_ChildBrowsingContext_CrossOriginNameMismatch = 1872,
+kV0CustomElementsRegisterHTMLCustomTag = 1873,
+kV0CustomElementsRegisterHTMLTypeExtension = 1874,
+kV0CustomElementsRegisterSVGElement = 1875,
+kV0CustomElementsRegisterEmbedderElement = 1876,
+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,
+kHTMLContentElement = 1896,
+kHTMLShadowElement = 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,
+kV8SVGPathElement_GetPathSegAtLength_Method = 1917,
+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,
+kMediaStreamConstraintsDepthNear = 1939,
+kMediaStreamConstraintsDepthFar = 1940,
+kMediaStreamConstraintsFocalLengthX = 1941,
+kMediaStreamConstraintsFocalLengthY = 1942,
+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,
+kMediaStreamConstraintsGoogPowerLineFrequency = 1960,
+// The above items are available in M59 branch.
+
+kViewportFixedPositionUnderFilter = 1961,
+kRequestMIDIAccessWithSysExOption = 1962,
+kRequestMIDIAccessIframeWithSysExOption = 1963,
+kGamepadAxes = 1964,
+kGamepadButtons = 1965,
+kVibrateWithoutUserGesture = 1966,
+kDispatchMouseEventOnDisabledFormControl = 1967,
+kElementNameDOMInvalidHTMLParserValid = 1968,
+kElementNameDOMValidHTMLParserInvalid = 1969,
+kGATTServerDisconnectedEvent = 1970,
+kAnchorClickDispatchForNonConnectedNode = 1971,
+kHTMLParseErrorNestedForm = 1972,
+kFontShapingNotDefGlyphObserved = 1973,
+kPostMessageOutgoingWouldBeBlockedByConnectSrc = 1974,
+kPostMessageIncomingWouldBeBlockedByConnectSrc = 1975,
+kPaymentRequestNetworkNameInSupportedMethods = 1976,
+kCrossOriginPropertyAccess = 1977,
+kCrossOriginPropertyAccessFromOpener = 1978,
+kCredentialManagerCreate = 1979,
+kWebDatabaseCreateDropFTS3Table = 1980,
+kFieldEditInSecureContext = 1981,
+kFieldEditInNonSecureContext = 1982,
+kCredentialManagerCredentialRequestOptionsUnmediated = 1983,
+kCredentialManagerGetMediationRequired = 1984,
+kCredentialManagerIdName = 1985,
+kCredentialManagerPasswordName = 1986,
+kCredentialManagerAdditionalData = 1987,
+kCredentialManagerCustomFetch = 1988,
+kNetInfoRtt = 1989,
+kNetInfoDownlink = 1990,
+kShapeDetection_BarcodeDetectorConstructor = 1991,
+kShapeDetection_FaceDetectorConstructor = 1992,
+kShapeDetection_TextDetectorConstructor = 1993,
+kCredentialManagerCredentialRequestOptionsOnlyUnmediated = 1994,
+kInertAttribute = 1995,
+kPluginInstanceAccessFromIsolatedWorld = 1996,
+kPluginInstanceAccessFromMainWorld = 1997,
+kRequestFullscreenForDialogElement = 1998,
+kRequestFullscreenForDialogElementInTopLayer = 1999,
+kShowModalForElementInFullscreenStack = 2000,
+kThreeValuedPositionBackground = 2001,
+kThreeValuedPositionBasicShape = 2002,
+kThreeValuedPositionGradient = 2003,
+kThreeValuedPositionObjectPosition = 2004,
+kThreeValuedPositionPerspectiveOrigin = 2005,
+kUnitlessZeroAngleFilter = 2007,
+kUnitlessZeroAngleGradient = 2008,
+kUnitlessZeroAngleOffsetRotate = 2009,
+kUnitlessZeroAngleTransform = 2010,
+kHTMLOListElementStartGetterReversedWithoutStartAttribute = 2011,
+kCredentialManagerPreventSilentAccess = 2012,
+kNetInfoEffectiveType = 2013,
+kV8SpeechRecognition_Start_Method = 2014,
+kTableRowDirectionDifferentFromTable = 2015,
+kTableSectionDirectionDifferentFromTable = 2016,
+// The above items are available in M60 branch.
+
+kClientHintsDeviceRAM = 2017,
+kCSSRegisterProperty = 2018,
+// 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.
+kNumberOfFeatures,  // This enum value must be last.