Revert r180578, r180591, and r180604 from 1410 branch.

media/base/video_renderer.h

Index: media/base/video_renderer.h
===================================================================
--- media/base/video_renderer.h	(revision 182591)
+++ media/base/video_renderer.h	(working copy)
@@ -22,7 +22,8 @@
 class DemuxerStream;
 class VideoDecoder;
 
-class MEDIA_EXPORT VideoRenderer {
+class MEDIA_EXPORT VideoRenderer
+    : public base::RefCountedThreadSafe<VideoRenderer> {
  public:
   typedef std::list<scoped_refptr<VideoDecoder> > VideoDecoderList;
 
@@ -36,9 +37,6 @@
   // Used to query the current time or duration of the media.
   typedef base::Callback<base::TimeDelta()> TimeDeltaCB;
 
-  VideoRenderer();
-  virtual ~VideoRenderer();
-
   // Initialize a VideoRenderer with the given DemuxerStream and
   // VideoDecoderList, executing |init_cb| callback upon completion.
   //
@@ -93,6 +91,12 @@
   // Updates the current playback rate.
   virtual void SetPlaybackRate(float playback_rate) = 0;
 
+ protected:
+  friend class base::RefCountedThreadSafe<VideoRenderer>;
+
+  VideoRenderer();
+  virtual ~VideoRenderer();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoRenderer);
 };