Move AudioRenderer out of Filter heirarchy.

media/filters/audio_renderer_impl.h

Index: media/filters/audio_renderer_impl.h
diff --git a/media/filters/audio_renderer_impl.h b/media/filters/audio_renderer_impl.h
index 3be42f8fa9ca68056dc0e506e90e6e9481236581..0ba032dc3b7a85b7bdbdee0fdec67a991b3b368b 100644
--- a/media/filters/audio_renderer_impl.h
+++ b/media/filters/audio_renderer_impl.h
@@ -40,20 +40,18 @@ class MEDIA_EXPORT AudioRendererImpl
   explicit AudioRendererImpl(media::AudioRendererSink* sink);
 
   // Methods called on pipeline thread ----------------------------------------
-  // Filter implementation.
-  virtual void SetHost(FilterHost* host) OVERRIDE;
+  // AudioRenderer implementation.
+  virtual void SetHost(AudioRendererHost* host) OVERRIDE;
+  virtual void Initialize(const scoped_refptr<AudioDecoder>& decoder,
+                          const PipelineStatusCB& init_cb,
+                          const base::Closure& underflow_cb,
+                          const TimeCB& time_cb) OVERRIDE;
   virtual void Play(const base::Closure& callback) OVERRIDE;
   virtual void Pause(const base::Closure& callback) OVERRIDE;
   virtual void Flush(const base::Closure& callback) OVERRIDE;
   virtual void Stop(const base::Closure& callback) OVERRIDE;
   virtual void SetPlaybackRate(float rate) OVERRIDE;
   virtual void Seek(base::TimeDelta time, const PipelineStatusCB& cb) OVERRIDE;
-
-  // AudioRenderer implementation.
-  virtual void Initialize(const scoped_refptr<AudioDecoder>& decoder,
-                          const PipelineStatusCB& init_cb,
-                          const base::Closure& underflow_cb,
-                          const TimeCB& time_cb) OVERRIDE;
   virtual bool HasEnded() OVERRIDE;
   virtual void ResumeAfterUnderflow(bool buffer_more_audio) OVERRIDE;
   virtual void SetVolume(float volume) OVERRIDE;
@@ -131,7 +129,7 @@ class MEDIA_EXPORT AudioRendererImpl
   // in the kSeeking state.
   bool IsBeforeSeekTime(const scoped_refptr<Buffer>& buffer);
 
-  FilterHost* host_;
+  AudioRendererHost* host_;
 
   // Audio decoder.
   scoped_refptr<AudioDecoder> decoder_;