Move VideoDecoder initialization into VideoRendererBase.

media/base/video_renderer.h

Index: media/base/video_renderer.h
diff --git a/media/base/video_renderer.h b/media/base/video_renderer.h
index 285592e00ef6bc74e9dce07473fb91fcafaa09e9..0ac60e8189453613a4546c9dbe361bb42d9bac06 100644
--- a/media/base/video_renderer.h
+++ b/media/base/video_renderer.h
@@ -5,6 +5,8 @@
 #ifndef MEDIA_BASE_VIDEO_RENDERER_H_
 #define MEDIA_BASE_VIDEO_RENDERER_H_
 
+#include <list>
+
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/time.h"
@@ -17,11 +19,14 @@ class Size;
 
 namespace media {
 
+class DemuxerStream;
 class VideoDecoder;
 
 class MEDIA_EXPORT VideoRenderer
     : public base::RefCountedThreadSafe<VideoRenderer> {
  public:
+  typedef std::list<scoped_refptr<VideoDecoder> > VideoDecoderList;
+
   // Used to update the pipeline's clock time. The parameter is the time that
   // the clock should not exceed.
   typedef base::Callback<void(base::TimeDelta)> TimeCB;
@@ -50,7 +55,8 @@ class MEDIA_EXPORT VideoRenderer
   // |get_time_cb| is used to query the current media playback time.
   //
   // |get_duration_cb| is used to query the media duration.
-  virtual void Initialize(const scoped_refptr<VideoDecoder>& decoder,
+  virtual void Initialize(const scoped_refptr<DemuxerStream>& stream,
+                          const VideoDecoderList& decoders,
                           const PipelineStatusCB& init_cb,
                           const StatisticsCB& statistics_cb,
                           const TimeCB& time_cb,
@@ -85,6 +91,13 @@ class MEDIA_EXPORT VideoRenderer
   // Updates the current playback rate.
   virtual void SetPlaybackRate(float playback_rate) = 0;
 
+  // Prepare decoder for shutdown.  This is a HACK needed because
+  // PipelineImpl::Stop() goes through a Pause/Flush/Stop dance to all its
+  // filters, waiting for each state transition to complete before starting the
+  // next, but WebMediaPlayerImpl::Destroy() holds the renderer loop hostage for
+  // the duration. http://crbug.com/110228 tracks removing this.
+  virtual void PrepareForShutdownHack() = 0;
+
  protected:
   friend class base::RefCountedThreadSafe<VideoRenderer>;