Remove unused UseCounter features

Source/core/frame/UseCounter.h

 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 44 matching lines @@
 class UseCounter {
     WTF_MAKE_NONCOPYABLE(UseCounter);
 public:
     UseCounter();
     ~UseCounter();
 
     enum Feature {
         // Do not change assigned numbers of existing items: add new features
         // to the end of the list.
         PageDestruction = 0,
-        LegacyNotifications = 1,
         PrefixedIndexedDB = 3,
         WorkerStart = 4,
         SharedWorkerStart = 5,
-        LegacyWebAudio = 6,
-        WebAudioStart = 7,
         UnprefixedIndexedDB = 9,
         OpenWebDatabase = 10,
-        LegacyTextNotifications = 12,
         UnprefixedRequestAnimationFrame = 13,
         PrefixedRequestAnimationFrame = 14,
         ContentSecurityPolicy = 15,
         ContentSecurityPolicyReportOnly = 16,
         PrefixedTransitionEndEvent = 18,
         UnprefixedTransitionEndEvent = 19,
         PrefixedAndUnprefixedTransitionEndEvent = 20,
         AutoFocusAttribute = 21,
         DataListElement = 23,
         FormAttribute = 24,
@@ skipping 48 matching lines @@
         DocumentAll = 83,
         FormElement = 84,
         DemotedFormElement = 85,
         CaptureAttributeAsEnum = 86,
         SVGAnimationElement = 90,
         KeyboardEventKeyLocation = 91,
         LineClamp = 96,
         SubFrameBeforeUnloadRegistered = 97,
         SubFrameBeforeUnloadFired = 98,
         TextReplaceWholeText = 100,
-        PrefixedShadowRootConstructor = 101,
         ConsoleMarkTimeline = 102,
         CSSPseudoElementUserAgentCustomPseudo = 103,
         DocumentTypeInternalSubset = 105, // Removed from DOM4.
         ElementGetAttributeNode = 107, // Removed from DOM4.
         ElementSetAttributeNode = 108, // Removed from DOM4.
         ElementRemoveAttributeNode = 109, // Removed from DOM4.
         ElementGetAttributeNodeNS = 110, // Removed from DOM4.
         DocumentCreateAttribute = 111, // Removed from DOM4.
         DocumentCreateAttributeNS = 112, // Removed from DOM4.
         DocumentCreateCDATASection = 113, // Removed from DOM4.
@@ skipping 13 matching lines @@
         UnprefixedAnimationEndEvent = 129,
         PrefixedAndUnprefixedAnimationEndEvent = 130,
         PrefixedAnimationStartEvent = 131,
         UnprefixedAnimationStartEvent = 132,
         PrefixedAndUnprefixedAnimationStartEvent = 133,
         PrefixedAnimationIterationEvent = 134,
         UnprefixedAnimationIterationEvent = 135,
         PrefixedAndUnprefixedAnimationIterationEvent = 136,
         EventReturnValue = 137, // Legacy IE extension.
         SVGSVGElement = 138,
-        SVGAnimateColorElement = 139,
         InsertAdjacentText = 140,
         InsertAdjacentElement = 141,
         HasAttributes = 142, // Removed from DOM4.
         DOMSubtreeModifiedEvent = 143,
         DOMNodeInsertedEvent = 144,
         DOMNodeRemovedEvent = 145,
         DOMNodeRemovedFromDocumentEvent = 146,
         DOMNodeInsertedIntoDocumentEvent = 147,
         DOMCharacterDataModifiedEvent = 148,
         DocumentAllLegacyCall = 150,
@@ skipping 65 matching lines @@
         CanPlayTypeKeySystem = 232,
         PrefixedDevicePixelRatioMediaFeature = 233,
         PrefixedMaxDevicePixelRatioMediaFeature = 234,
         PrefixedMinDevicePixelRatioMediaFeature = 235,
         PrefixedTransform2dMediaFeature = 236,
         PrefixedTransform3dMediaFeature = 237,
         PrefixedAnimationMediaFeature = 238,
         PrefixedViewModeMediaFeature = 239,
         PrefixedStorageQuota = 240,
         ContentSecurityPolicyReportOnlyInMeta = 241,
-        PrefixedMediaSourceOpen = 242,
         ResetReferrerPolicy = 243,
         CaseInsensitiveAttrSelectorMatch = 244, // Case-insensitivity dropped from specification.
         CaptureAttributeAsBoolean = 245,
         FormNameAccessForImageElement = 246,
         FormNameAccessForPastNamesMap = 247,
         FormAssociationByParser = 248,
         SVGSVGElementInDocument = 250,
         SVGDocumentRootElement = 251,
         DocumentCreateEventOptionalArgument = 252,
         MediaErrorEncrypted = 253,
@@ skipping 11 matching lines @@
         UnprefixedImageSmoothingEnabled = 268,
         PromiseConstructor = 270,
         PromiseCast = 271,
         PromiseReject = 272,
         PromiseResolve = 273,
         // The above items are available in M34 branch.
 
         TextAutosizing = 274,
         TextAutosizingLayout = 275,
         HTMLAnchorElementPingAttribute = 276,
-        JavascriptExhaustedMemory = 277,
         InsertAdjacentHTML = 278,
         SVGClassName = 279,
         HTMLAppletElement = 280,
         HTMLMediaElementSeekToFragmentStart = 281,
         HTMLMediaElementPauseAtFragmentEnd = 282,
         PrefixedWindowURL = 283,
         PrefixedWorkerURL = 284,
         WindowOrientation = 285,
         DOMStringListContains = 286,
         DocumentCaptureEvents = 287,
@@ skipping 120 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace WebCore
 
 #endif // UseCounter_h