Remove reference counting from media::DemuxerStream and friends.

media/base/demuxer.h

 // Copyright (c) 2012 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 MEDIA_BASE_DEMUXER_H_
 #define MEDIA_BASE_DEMUXER_H_
 
 #include "base/time.h"
 #include "media/base/data_source.h"
 #include "media/base/demuxer_stream.h"
@@ skipping 38 matching lines @@
 
   // The pipeline is being stopped either as a result of an error or because
   // the client called Stop().
   virtual void Stop(const base::Closure& callback);
 
   // This method is called from the pipeline when the audio renderer
   // is disabled. Demuxers can ignore the notification if they do not
   // need to react to this event.
   //
   // TODO(acolwell): Change to generic DisableStream(DemuxerStream::Type).
+  // TODO(scherkus): this might not be needed http://crbug.com/234708
   virtual void OnAudioRendererDisabled();
 
   // Returns the given stream type, or NULL if that type is not present.
-  virtual scoped_refptr<DemuxerStream> GetStream(DemuxerStream::Type type) = 0;
+  virtual DemuxerStream* GetStream(DemuxerStream::Type type) = 0;
 
   // Returns the starting time for the media file.
   virtual base::TimeDelta GetStartTime() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Demuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DEMUXER_H_