Remove Element#attributes.

sky/engine/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 235 matching lines @@
         ElementAnimateKeyframeListEffectDoubleTiming = 293,
         ElementAnimateKeyframeListEffectNoTiming = 294,
         AttrGetValue = 298,
         AttrSetValue = 299,
         AnimationConstructorKeyframeListEffectObjectTiming = 300,
         AnimationConstructorKeyframeListEffectDoubleTiming = 301,
         AnimationConstructorKeyframeListEffectNoTiming = 302,
         AttrSetValueWithElement = 303,
         PrefixedCancelAnimationFrame = 304,
         PrefixedCancelRequestAnimationFrame = 305,
-        NamedNodeMapGetNamedItem = 306,
-        NamedNodeMapSetNamedItem = 307,
-        NamedNodeMapRemoveNamedItem = 308,
-        NamedNodeMapItem = 309,
+
         OpenWebDatabaseInWorker = 313, // This didn't work because of crbug.com/376039. Available since M37.
         OpenWebDatabaseSyncInWorker = 314, // This didn't work because of crbug.com/376039. Available since M37.
         XHRProgressEventPosition = 316,
         XHRProgressEventTotalSize = 317,
         PrefixedDocumentIsFullscreen = 318,
         PrefixedDocumentFullScreenKeyboardInputAllowed = 319,
         PrefixedDocumentCurrentFullScreenElement = 320,
         PrefixedDocumentCancelFullScreen = 321,
         PrefixedDocumentFullscreenEnabled = 322,
         PrefixedDocumentFullscreenElement = 323,
@@ skipping 220 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h