Audio related IPC messages and handlers from browser to renderer

chrome/renderer/media/audio_renderer_impl.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.  Use of this
 // source code is governed by a BSD-style license that can be found in the
 // LICENSE file.
 
 #ifndef CHROME_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_
 #define CHROME_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_
 
+#include "base/shared_memory.h"
+#include "media/audio/audio_output.h"
 #include "media/base/factory.h"
 #include "media/base/filters.h"
 
 class WebMediaPlayerDelegateImpl;
 
 class AudioRendererImpl : public media::AudioRenderer {
  public:
   AudioRendererImpl(WebMediaPlayerDelegateImpl* delegate);
 
   // media::MediaFilter implementation.
   virtual void Stop();
 
   // media::AudioRenderer implementation.
   virtual bool Initialize(media::AudioDecoder* decoder);
   virtual void SetVolume(float volume);
 
   // Static method for creating factory for this object.
   static media::FilterFactory* CreateFactory(
       WebMediaPlayerDelegateImpl* delegate) {
     return new media::FilterFactoryImpl1<AudioRendererImpl,
                                          WebMediaPlayerDelegateImpl*>(delegate);
   }
 
   // Answers question from the factory to see if we accept |format|.
   static bool IsMediaFormatSupported(const media::MediaFormat* format);
 
+  void OnRequestPacket();
+  void OnStateChanged(AudioOutputStream::State state, int info);
+  void OnCreated(base::SharedMemoryHandle handle, size_t length);
+  void OnVolume(double left, double right);
+
  protected:
   virtual ~AudioRendererImpl();
 
  private:
   WebMediaPlayerDelegateImpl* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_