Change DemuxerStream::ReadCallback to use ref-counted buffers.

media/filters/ffmpeg_video_decoder.h

 // Copyright (c) 2011 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_FILTERS_FFMPEG_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_
 
 #include <deque>
 
 #include "media/base/filters.h"
@@ skipping 46 matching lines @@
     kNormal,
     kFlushCodec,
     kDecodeFinished,
     kPausing,
     kFlushing,
     kStopped
   };
 
   void OnFlushComplete(const base::Closure& callback);
   void OnSeekComplete(const base::Closure& callback);
-  void OnReadComplete(Buffer* buffer);
-
-  // TODO(jiesun): until demuxer pass scoped_refptr<Buffer>: we could not merge
-  // this with OnReadComplete
-  void OnReadCompleteTask(scoped_refptr<Buffer> buffer);
+  void OnReadComplete(const scoped_refptr<Buffer>& buffer);
+  void OnReadCompleteTask(const scoped_refptr<Buffer>& buffer);
 
   // Flush the output buffers that we had held in Paused state.
   void FlushBuffers();
 
   // Injection point for unittest to provide a mock engine.  Takes ownership of
   // the provided engine.
   virtual void SetVideoDecodeEngineForTest(VideoDecodeEngine* engine);
 
   MessageLoop* message_loop_;
 
@@ skipping 16 matching lines @@
 
   // Pointer to the demuxer stream that will feed us compressed buffers.
   scoped_refptr<DemuxerStream> demuxer_stream_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_