Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/source_buffer_state.cc

 // Copyright 2016 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.
 
 #include "media/filters/source_buffer_state.h"
 
 #include <set>
 
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
@@ skipping 101 matching lines @@
     intersection_ranges = intersection_ranges.IntersectionWith(source_ranges);
   }
 
   return intersection_ranges;
 }
 
 SourceBufferState::SourceBufferState(
     std::unique_ptr<StreamParser> stream_parser,
     std::unique_ptr<FrameProcessor> frame_processor,
     const CreateDemuxerStreamCB& create_demuxer_stream_cb,
-    const scoped_refptr<MediaLog>& media_log)
+    MediaLog* media_log)
     : create_demuxer_stream_cb_(create_demuxer_stream_cb),
       timestamp_offset_during_append_(NULL),
       parsing_media_segment_(false),
       stream_parser_(stream_parser.release()),
       frame_processor_(frame_processor.release()),
       media_log_(media_log),
       state_(UNINITIALIZED),
       auto_update_timestamp_offset_(false) {
   DCHECK(!create_demuxer_stream_cb_.is_null());
   DCHECK(frame_processor_);
@@ skipping 775 matching lines @@
 }
 void SourceBufferState::OnSourceInitDone(
     const StreamParser::InitParameters& params) {
   DCHECK_EQ(state_, PENDING_PARSER_INIT);
   state_ = PARSER_INITIALIZED;
   auto_update_timestamp_offset_ = params.auto_update_timestamp_offset;
   base::ResetAndReturn(&init_cb_).Run(params);
 }
 
 }  // namespace media