Removing DataSource from Filter hierarchy

media/filters/ffmpeg_demuxer.h

Index: media/filters/ffmpeg_demuxer.h
diff --git a/media/filters/ffmpeg_demuxer.h b/media/filters/ffmpeg_demuxer.h
index 36304814657cf6b670babfd02fdfcea1c9db1e36..47180b96b322a162d91e1dfcd53a352014757fd0 100644
--- a/media/filters/ffmpeg_demuxer.h
+++ b/media/filters/ffmpeg_demuxer.h
@@ -141,7 +141,7 @@ class MEDIA_EXPORT FFmpegDemuxer : public Demuxer, public FFmpegURLProtocol {
   virtual void Stop(const base::Closure& callback) OVERRIDE;
   virtual void Seek(base::TimeDelta time, const FilterStatusCB& cb) OVERRIDE;
   virtual void OnAudioRendererDisabled() OVERRIDE;
-  virtual void set_host(FilterHost* filter_host) OVERRIDE;
+  virtual void set_host(DemuxerHost* demuxer_host) OVERRIDE;
   virtual void SetPlaybackRate(float playback_rate) OVERRIDE;
   virtual scoped_refptr<DemuxerStream> GetStream(
       DemuxerStream::Type type) OVERRIDE;
@@ -249,7 +249,7 @@ class MEDIA_EXPORT FFmpegDemuxer : public Demuxer, public FFmpegURLProtocol {
   int64 read_position_;
 
   // Initialization can happen before set_host() is called, in which case we
-  // store these bits for deferred reporting to the FilterHost when we get one.
+  // store these bits for deferred reporting to the DemuxerHost when we get one.
   base::TimeDelta max_duration_;
   PipelineStatus deferred_status_;