Fold DecoderStream::Stop() into the dtor.

media/filters/video_renderer_impl.h

Index: media/filters/video_renderer_impl.h
diff --git a/media/filters/video_renderer_impl.h b/media/filters/video_renderer_impl.h
index 0f142be3520509a1e7b3ac200ea601b5f4f6701a..06262dadf4348a4ae5e9a6d019c7bd1d54fc17a5 100644
--- a/media/filters/video_renderer_impl.h
+++ b/media/filters/video_renderer_impl.h
@@ -8,6 +8,7 @@
 #include <deque>
 
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/condition_variable.h"
@@ -123,7 +124,7 @@ class MEDIA_EXPORT VideoRendererImpl
   base::Lock lock_;
 
   // Provides video frames to VideoRendererImpl.
-  VideoFrameStream video_frame_stream_;
+  scoped_ptr<VideoFrameStream> video_frame_stream_;
 
   // Flag indicating low-delay mode.
   bool low_delay_;