Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/formats/mpeg/mpeg1_audio_stream_parser.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_FORMATS_MPEG_MPEG1_AUDIO_STREAM_PARSER_H_
 #define MEDIA_FORMATS_MPEG_MPEG1_AUDIO_STREAM_PARSER_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 46 matching lines @@
     // Channel layout.
     ChannelLayout channel_layout;
 
     // Number of samples per frame.
     int sample_count;
   };
 
   // Parses the header starting at |data|.
   // Assumption: size of array |data| should be at least |kHeaderSize|.
   // Returns false if the header is not valid.
-  static bool ParseHeader(const scoped_refptr<MediaLog>& media_log,
+  static bool ParseHeader(MediaLog* media_log,
                           const uint8_t* data,
                           Header* header);
 
   MPEG1AudioStreamParser();
   ~MPEG1AudioStreamParser() override;
 
  private:
   // MPEGAudioStreamParserBase overrides.
   int ParseFrameHeader(const uint8_t* data,
                        int size,
                        int* frame_size,
                        int* sample_rate,
                        ChannelLayout* channel_layout,
                        int* sample_count,
                        bool* metadata_frame,
                        std::vector<uint8_t>* extra_data) const override;
 
   DISALLOW_COPY_AND_ASSIGN(MPEG1AudioStreamParser);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MPEG_MPEG1_AUDIO_STREAM_PARSER_H_