Supporting a playbackTime attribute on AudioprocessingEvent.

Source/modules/webaudio/AudioProcessingEvent.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 19 matching lines @@
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class AudioBuffer;
 
 class AudioProcessingEvent FINAL : public Event {
 public:
     static PassRefPtrWillBeRawPtr<AudioProcessingEvent> create();
-    static PassRefPtrWillBeRawPtr<AudioProcessingEvent> create(PassRefPtr<AudioBuffer> inputBuffer, PassRefPtr<AudioBuffer> outputBuffer);
+    static PassRefPtrWillBeRawPtr<AudioProcessingEvent> create(PassRefPtr<AudioBuffer> inputBuffer, PassRefPtr<AudioBuffer> outputBuffer, double playbackTime);
 
     virtual ~AudioProcessingEvent();
 
     AudioBuffer* inputBuffer() { return m_inputBuffer.get(); }
     AudioBuffer* outputBuffer() { return m_outputBuffer.get(); }
+    double playbackTime() const { return m_playbackTime; }
 
     virtual const AtomicString& interfaceName() const OVERRIDE;
 
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
     AudioProcessingEvent();
-    AudioProcessingEvent(PassRefPtr<AudioBuffer> inputBuffer, PassRefPtr<AudioBuffer> outputBuffer);
+    AudioProcessingEvent(PassRefPtr<AudioBuffer> inputBuffer, PassRefPtr<AudioBuffer> outputBuffer, double playbackTime);
 
     RefPtr<AudioBuffer> m_inputBuffer;
     RefPtr<AudioBuffer> m_outputBuffer;
+    double m_playbackTime;
 };
 
 } // namespace WebCore
 
 #endif // AudioProcessingEvent_h