Integrate HTMLMediaElement with Web Audio API's MediaElementAudioSourceNode

content/renderer/media/audio_renderer_impl.h

Index: content/renderer/media/audio_renderer_impl.h
===================================================================
--- content/renderer/media/audio_renderer_impl.h	(revision 116581)
+++ content/renderer/media/audio_renderer_impl.h	(working copy)
@@ -25,16 +25,18 @@
 #include "content/renderer/media/audio_device.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
+#include "media/base/audio_renderer_sink.h"
 #include "media/filters/audio_renderer_base.h"
 
 class AudioMessageFilter;
 
 class CONTENT_EXPORT AudioRendererImpl
     : public media::AudioRendererBase,
-      public AudioDevice::RenderCallback {
+      public media::AudioRendererSink::RenderCallback {
  public:
   // Methods called on Render thread ------------------------------------------
-  AudioRendererImpl();
+  // An AudioRendererSink is used as the destination for the rendered audio.
+  explicit AudioRendererImpl(media::AudioRendererSink* sink);
   virtual ~AudioRendererImpl();
 
   // Methods called on pipeline thread ----------------------------------------
@@ -74,7 +76,7 @@
   void DoPause();
   void DoSeek();
 
-  // AudioDevice::RenderCallback implementation.
+  // media::AudioRendererSink::RenderCallback implementation.
   virtual size_t Render(const std::vector<float*>& audio_data,
                         size_t number_of_frames,
                         size_t audio_delay_milliseconds) OVERRIDE;
@@ -103,9 +105,12 @@
   // A flag that indicates this filter is called to stop.
   bool stopped_;
 
-  // audio_device_ is the sink (destination) for rendered audio.
-  scoped_refptr<AudioDevice> audio_device_;
+  // The sink (destination) for rendered audio.
+  scoped_refptr<media::AudioRendererSink> sink_;
 
+  // Set to true when OnInitialize() is called.
+  bool is_initialized_;
+
   // We're supposed to know amount of audio data OS or hardware buffered, but
   // that is not always so -- on my Linux box
   // AudioBuffersState::hardware_delay_bytes never reaches 0.