Separate DemuxerHost from DataSourceHost.

media/base/demuxer.h

Index: media/base/demuxer.h
diff --git a/media/base/demuxer.h b/media/base/demuxer.h
index 9b671f007cb65e2ed9b3eda6157c1ca0db6a2ed5..f6c7517e8c007e53871ca6ee364da0177142dbd7 100644
--- a/media/base/demuxer.h
+++ b/media/base/demuxer.h
@@ -17,8 +17,12 @@ namespace media {
 
 class TextTrackConfig;
 
-class MEDIA_EXPORT DemuxerHost : public DataSourceHost {
+class MEDIA_EXPORT DemuxerHost {
  public:
+  // Notify the host that time range [start,end] has been buffered.
+  virtual void AddBufferedTimeRange(base::TimeDelta start,
+                                    base::TimeDelta end) = 0;
+
   // Sets the duration of the media in microseconds.
   // Duration may be kInfiniteDuration() if the duration is not known.
   virtual void SetDuration(base::TimeDelta duration) = 0;
@@ -31,9 +35,6 @@ class MEDIA_EXPORT DemuxerHost : public DataSourceHost {
   virtual void AddTextStream(DemuxerStream* text_stream,
                              const TextTrackConfig& config) = 0;
 
-  // Remove |text_stream| from the presentation.
-  virtual void RemoveTextStream(DemuxerStream* text_stream) = 0;

[scherkus (not reviewing), 2014/03/26 21:50:12]

what happened to this method?

[sandersd (OOO until July 31), 2014/03/26 22:11:12]

It's never called, but this is the right place for it. I'll put it back.

-
  protected:
   virtual ~DemuxerHost();
 };