Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/source_buffer_stream.h

 // Copyright (c) 2012 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.
 
 // SourceBufferStream is a data structure that stores media Buffers in ranges.
 // Buffers can be appended out of presentation order. Buffers are retrieved by
 // seeking to the desired start point and calling GetNextBuffer(). Buffers are
 // returned in sequential presentation order.
 
 #ifndef MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_
@@ skipping 40 matching lines @@
     kEndOfStream
   };
 
   enum Type {
     kAudio,
     kVideo,
     kText
   };
 
   SourceBufferStream(const AudioDecoderConfig& audio_config,
-                     const scoped_refptr<MediaLog>& media_log);
+                     MediaLog* media_log);
   SourceBufferStream(const VideoDecoderConfig& video_config,
-                     const scoped_refptr<MediaLog>& media_log);
-  SourceBufferStream(const TextTrackConfig& text_config,
-                     const scoped_refptr<MediaLog>& media_log);
+                     MediaLog* media_log);
+  SourceBufferStream(const TextTrackConfig& text_config, MediaLog* media_log);
 
   ~SourceBufferStream();
 
   // Signals that the next buffers appended are part of a new coded frame group
   // starting at |coded_frame_group_start_time|.
   // TODO(acolwell/wolenetz): This should be changed to a presentation
   // timestamp. See http://crbug.com/402502
   void OnStartOfCodedFrameGroup(DecodeTimestamp coded_frame_group_start_time);
 
   // Add the |buffers| to the SourceBufferStream. Buffers within the queue are
@@ skipping 287 matching lines @@
   // current playback position.
   void WarnIfTrackBufferExhaustionSkipsForward(
       const scoped_refptr<StreamParserBuffer>& next_buffer);
 
   // If |out_buffer| has preroll, sets |pending_buffer_| to feed out preroll and
   // returns true.  Otherwise returns false.
   bool SetPendingBuffer(scoped_refptr<StreamParserBuffer>* out_buffer);
 
   // Used to report log messages that can help the web developer figure out what
   // is wrong with the content.
-  scoped_refptr<MediaLog> media_log_;
+  MediaLog* media_log_;
 
   // List of disjoint buffered ranges, ordered by start time.
   RangeList ranges_;
 
   // Indicates which decoder config is being used by the decoder.
   // GetNextBuffer() is only allows to return buffers that have a
   // config ID that matches this index. If there is a mismatch then
   // it must signal that a config change is needed.
   int current_config_index_ = 0;
 
@@ skipping 82 matching lines @@
   int num_track_buffer_gap_warning_logs_ = 0;
   int num_garbage_collect_algorithm_logs_ = 0;
   int num_strange_same_timestamps_logs_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(SourceBufferStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_