Add counters for all of the WebAudio nodes and important methods.

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 552 matching lines @@
         AudioListenerSpeedOfSound = 621,
         AudioListenerSetVelocity = 622,
         ShadowRootGetElementsByClassName = 623,
         ShadowRootGetElementsByTagName = 624,
         ShadowRootGetElementsByTagNameNS = 625,
         SVGSMILAnimationInImage = 626,
         CSSSelectorPseudoFullScreenDocument = 627,
         CSSSelectorPseudoFullScreenAncestor = 628,
         CSSSelectorPseudoFullScreen = 629,
         WebKitCSSMatrix = 630,
+        AudioContextCreateAnalyser = 631,
+        AudioContextCreateBiquadFilter = 632,
+        AudioContextCreateBufferSource = 633,
+        AudioContextCreateChannelMerger = 634,
+        AudioContextCreateChannelSplitter = 635,
+        AudioContextCreateConvolver = 636,
+        AudioContextCreateDelay = 637,
+        AudioContextCreateDynamicsCompressor = 638,
+        AudioContextCreateGain = 639,
+        AudioContextCreateMediaElementSource = 640,
+        AudioContextCreateMediaStreamDestination = 641,
+        AudioContextCreateMediaStreamSource = 642,
+        AudioContextCreateOscillator = 643,
+        AudioContextCreatePanner = 644,
+        AudioContextCreatePeriodicWave = 645,
+        AudioContextCreateScriptProcessor = 646,
+        AudioContextCreateStereoPanner = 647,
+        AudioContextCreateWaveShaper = 648,
+        AudioContextDecodeAudioData = 649,
+        AudioContextResume = 650,
+        AudioContextSuspend = 651,
+        AudioContext = 652,
+        OfflineAudioContext = 653,
+        PrefixedAudioContext = 654,
+        PrefixedOfflineAudioContext = 655,
 
         // 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.
         NumberOfFeatures, // This enum value must be last.
     };
 
     // "count" sets the bit for this feature to 1. Repeated calls are ignored.
     static void count(const Frame*, Feature);
@@ skipping 63 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h