Remove reference counting from media::Demuxer and friends.

media/filters/video_renderer_base.h

Index: media/filters/video_renderer_base.h
diff --git a/media/filters/video_renderer_base.h b/media/filters/video_renderer_base.h
index 94e073022126d5bdb6309c48a6085016f997aeed..6eb81ea07a8a3808139cbd4847b3102ad29b591b 100644
--- a/media/filters/video_renderer_base.h
+++ b/media/filters/video_renderer_base.h
@@ -66,7 +66,7 @@ class MEDIA_EXPORT VideoRendererBase
   virtual ~VideoRendererBase();
 
   // VideoRenderer implementation.
-  virtual void Initialize(const scoped_refptr<DemuxerStream>& stream,
+  virtual void Initialize(DemuxerStream* stream,
                           const PipelineStatusCB& init_cb,
                           const StatisticsCB& statistics_cb,
                           const TimeCB& max_time_cb,
@@ -147,7 +147,7 @@ class MEDIA_EXPORT VideoRendererBase
   base::Lock lock_;
 
   // Provides video frames to VideoRendererBase.
-  scoped_refptr<VideoFrameStream> video_frame_stream_;
+  VideoFrameStream video_frame_stream_;
 
   // Queue of incoming frames yet to be painted.
   typedef std::deque<scoped_refptr<VideoFrame> > VideoFrameQueue;