remove memoryinstrumentation

Source/modules/webaudio/AudioContext.h

 /*
  * Copyright (C) 2010, 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 230 matching lines @@
 
     // Reconcile ref/deref which are defined both in ThreadSafeRefCounted and EventTarget.
     using ThreadSafeRefCounted<AudioContext>::ref;
     using ThreadSafeRefCounted<AudioContext>::deref;
 
     void startRendering();
     void fireCompletionEvent();
     
     static unsigned s_hardwareContextCount;
 
-    virtual void reportMemoryUsage(MemoryObjectInfo*) const OVERRIDE;
-
 protected:
     explicit AudioContext(Document*);
     AudioContext(Document*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
     
     static bool isSampleRateRangeGood(float sampleRate);
     
 private:
     void constructCommon();
 
     void lazyInitialize();
@@ skipping 85 matching lines @@
     // It is somewhat arbitrary and could be increased if necessary.
     enum { MaxNumberOfChannels = 32 };
 
     // Number of AudioBufferSourceNodes that are active (playing).
     int m_activeSourceCount;
 };
 
 } // WebCore
 
 #endif // AudioContext_h