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 102 matching lines @@
         DeprecatedFlexboxWebContent = 61,
         DeprecatedFlexboxChrome = 62,
         DeprecatedFlexboxChromeExtension = 63,
         UnprefixedPerformanceTimeline = 65,
         UnprefixedUserTiming = 67,
         WindowEvent = 69,
         ContentSecurityPolicyWithBaseElement = 70,
         PrefixedMediaAddKey = 71,
         PrefixedMediaGenerateKeyRequest = 72,
         DocumentClear = 74,
-        SVGFontElement = 76,
         XMLDocument = 77,
         XSLProcessingInstruction = 78,
         XSLTProcessor = 79,
         SVGSwitchElement = 80,
         DocumentAll = 83,
         FormElement = 84,
         DemotedFormElement = 85,
         SVGAnimationElement = 90,
         KeyboardEventKeyLocation = 91,
         LineClamp = 96,
@@ skipping 34 matching lines @@
         InsertAdjacentText = 140,
         InsertAdjacentElement = 141,
         HasAttributes = 142, // Removed from DOM4.
         DOMSubtreeModifiedEvent = 143,
         DOMNodeInsertedEvent = 144,
         DOMNodeRemovedEvent = 145,
         DOMNodeRemovedFromDocumentEvent = 146,
         DOMNodeInsertedIntoDocumentEvent = 147,
         DOMCharacterDataModifiedEvent = 148,
         DocumentAllLegacyCall = 150,
-        HTMLAppletElementLegacyCall = 151, // Removed
         HTMLEmbedElementLegacyCall = 152,
         HTMLObjectElementLegacyCall = 153,
         GetMatchedCSSRules = 155,
-        SVGFontInCSS = 156,
         AttributeOwnerElement = 160, // Removed in DOM4.
         AttributeSpecified = 162, // Removed in DOM4.
         PrefixedAudioDecodedByteCount = 164,
         PrefixedVideoDecodedByteCount = 165,
         PrefixedVideoSupportsFullscreen = 166,
         PrefixedVideoDisplayingFullscreen = 167,
         PrefixedVideoEnterFullscreen = 168,
         PrefixedVideoExitFullscreen = 169,
         PrefixedVideoEnterFullScreen = 170,
         PrefixedVideoExitFullScreen = 171,
@@ skipping 31 matching lines @@
         HTMLElementOuterText = 214,
         ReplaceDocumentViaJavaScriptURL = 215,
         ElementSetAttributeNodeNS = 216, // Removed from DOM4.
         ElementPrefixedMatchesSelector = 217,
         CSSStyleSheetRules = 219,
         CSSStyleSheetAddRule = 220,
         CSSStyleSheetRemoveRule = 221,
         // The above items are available in M33 branch.
 
         InitMessageEvent = 222,
-        CSSStyleDeclarationGetPropertyCSSValue = 225,
         PrefixedMediaCancelKeyRequest = 229,
         DOMImplementationHasFeature = 230,
         DOMImplementationHasFeatureReturnFalse = 231,
         CanPlayTypeKeySystem = 232,
         PrefixedDevicePixelRatioMediaFeature = 233,
         PrefixedMaxDevicePixelRatioMediaFeature = 234,
         PrefixedMinDevicePixelRatioMediaFeature = 235,
         PrefixedTransform3dMediaFeature = 237,
         PrefixedStorageQuota = 240,
-        ContentSecurityPolicyReportOnlyInMeta = 241,
         ResetReferrerPolicy = 243,
         CaseInsensitiveAttrSelectorMatch = 244, // Case-insensitivity dropped from specification.
         FormNameAccessForImageElement = 246,
         FormNameAccessForPastNamesMap = 247,
         FormAssociationByParser = 248,
         SVGSVGElementInDocument = 250,
         SVGDocumentRootElement = 251,
         MediaErrorEncrypted = 253,
         EventSourceURL = 254,
         WebSocketURL = 255,
@@ skipping 145 matching lines @@
         CSSCharsetRuleEncoding = 426,
         DocumentSetCharset = 427,
         DocumentDefaultCharset = 428,
         TextEncoderConstructor = 429,
         TextEncoderEncode = 430,
         TextDecoderConstructor = 431,
         TextDecoderDecode = 432,
         FocusInOutEvent = 433,
         MouseEventMovementX = 434,
         MouseEventMovementY = 435,
-        MixedContentRaw = 437,
-        MixedContentImage = 438,
-        MixedContentMedia = 439,
         DocumentFonts = 440,
         MixedContentFormsSubmitted = 441,
         FormsSubmitted = 442,
         TextInputEventOnInput = 443,
         TextInputEventOnTextArea = 444,
         TextInputEventOnContentEditable = 445,
         TextInputEventOnNotNode = 446,
         WebkitBeforeTextInsertedOnInput = 447,
         WebkitBeforeTextInsertedOnTextArea = 448,
         WebkitBeforeTextInsertedOnContentEditable = 449,
@@ skipping 218 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h