Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/decoder_stream.h

 // Copyright 2014 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_DECODER_STREAM_H_
 #define MEDIA_FILTERS_DECODER_STREAM_H_
 
 #include <deque>
 #include <list>
 #include <memory>
@@ skipping 38 matching lines @@
     DEMUXER_READ_ABORTED,  // Demuxer returned aborted read.
     DECODE_ERROR,  // Decoder returned decode error.
   };
 
   // Indicates completion of a DecoderStream initialization.
   typedef base::Callback<void(bool success)> InitCB;
 
   // Indicates completion of a DecoderStream read.
   typedef base::Callback<void(Status, const scoped_refptr<Output>&)> ReadCB;
 
-  DecoderStream(
-      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
-      ScopedVector<Decoder> decoders,
-      const scoped_refptr<MediaLog>& media_log);
+  DecoderStream(const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+                ScopedVector<Decoder> decoders,
+                MediaLog* media_log);
   virtual ~DecoderStream();
 
   // Returns the string representation of the StreamType for logging purpose.
   std::string GetStreamTypeString();
 
   // Initializes the DecoderStream and returns the initialization result
   // through |init_cb|. Note that |init_cb| is always called asynchronously.
   // |cdm_context| can be used to handle encrypted stream. Can be null if the
   // stream is not encrypted.
   void Initialize(DemuxerStream* stream,
@@ skipping 107 matching lines @@
 
   void CompleteDecoderReinitialization(bool success);
 
   void ResetDecoder();
   void OnDecoderReset();
 
   DecoderStreamTraits<StreamType> traits_;
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
-  scoped_refptr<MediaLog> media_log_;
+  MediaLog* media_log_;
 
   State state_;
 
   StatisticsCB statistics_cb_;
   InitCB init_cb_;
   base::Closure waiting_for_decryption_key_cb_;
 
   ReadCB read_cb_;
   base::Closure reset_cb_;
 
@@ skipping 61 matching lines @@
 
 template <>
 int DecoderStream<DemuxerStream::AUDIO>::GetMaxDecodeRequests() const;
 
 typedef DecoderStream<DemuxerStream::VIDEO> VideoFrameStream;
 typedef DecoderStream<DemuxerStream::AUDIO> AudioBufferStream;
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECODER_STREAM_H_