Remove ArrayBufferDeallocationObserver

Source/modules/webaudio/AudioBuffer.cpp

 /*
  * 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
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/AudioBuffer.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
-#include "core/dom/DOMArrayBufferDeallocationObserver.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/webaudio/AudioContext.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/AudioFileReader.h"
 #include "platform/audio/AudioUtilities.h"
 #include "wtf/Float32Array.h"
 
 namespace blink {
 
 AudioBuffer* AudioBuffer::create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
@@ skipping 273 matching lines @@
 void AudioBuffer::zero()
 {
     for (unsigned i = 0; i < m_channels.size(); ++i) {
         if (DOMFloat32Array* array = getChannelData(i)) {
             float* data = array->data();
             memset(data, 0, length() * sizeof(*data));
         }
     }
 }
 
-v8::Local<v8::Object> AudioBuffer::associateWithWrapper(v8::Isolate* isolate, const WrapperTypeInfo* wrapperType, v8::Local<v8::Object> wrapper)
-{
-    ScriptWrappable::associateWithWrapper(isolate, wrapperType, wrapper);
-
-    if (!wrapper.IsEmpty()) {
-        // We only setDeallocationObservers on array buffers that are held by
-        // some object in the V8 heap, not in the ArrayBuffer constructor
-        // itself. This is because V8 GC only cares about memory it can free on
-        // GC, and until the object is exposed to JavaScript, V8 GC doesn't
-        // affect it.
-        for (unsigned i = 0, n = numberOfChannels(); i < n; ++i) {
-            getChannelData(i)->buffer()->setDeallocationObserver(DOMArrayBufferDeallocationObserver::instance());
-        }
-    }
-    return wrapper;
-}
-
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)