Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/decoder_stream_traits.cc

 // 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.
 
 #include "media/filters/decoder_stream_traits.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 25 matching lines @@
 }
 
 // static
 DecoderStreamTraits<DemuxerStream::AUDIO>::DecoderConfigType
 DecoderStreamTraits<DemuxerStream::AUDIO>::GetDecoderConfig(
     DemuxerStream* stream) {
   return stream->audio_decoder_config();
 }
 
 DecoderStreamTraits<DemuxerStream::AUDIO>::DecoderStreamTraits(
-    const scoped_refptr<MediaLog>& media_log)
+    MediaLog* media_log)
     : media_log_(media_log) {}
 
 void DecoderStreamTraits<DemuxerStream::AUDIO>::ReportStatistics(
     const StatisticsCB& statistics_cb,
     int bytes_decoded) {
   PipelineStatistics statistics;
   statistics.audio_bytes_decoded = bytes_decoded;
   statistics_cb.Run(statistics);
 }
 
@@ skipping 47 matching lines @@
 }
 
 // static
 DecoderStreamTraits<DemuxerStream::VIDEO>::DecoderConfigType
 DecoderStreamTraits<DemuxerStream::VIDEO>::GetDecoderConfig(
     DemuxerStream* stream) {
   return stream->video_decoder_config();
 }
 
 DecoderStreamTraits<DemuxerStream::VIDEO>::DecoderStreamTraits(
-    const scoped_refptr<MediaLog>& media_log)
+    MediaLog* media_log)
     // Randomly selected number of samples to keep.
     : keyframe_distance_average_(16) {}
 
 void DecoderStreamTraits<DemuxerStream::VIDEO>::ReportStatistics(
     const StatisticsCB& statistics_cb,
     int bytes_decoded) {
   PipelineStatistics statistics;
   statistics.video_bytes_decoded = bytes_decoded;
 
   if (keyframe_distance_average_.count()) {
@@ skipping 45 matching lines @@
   }
 
   base::TimeDelta frame_distance =
       current_frame_timestamp - last_keyframe_timestamp_;
   UMA_HISTOGRAM_MEDIUM_TIMES("Media.Video.KeyFrameDistance", frame_distance);
   last_keyframe_timestamp_ = current_frame_timestamp;
   keyframe_distance_average_.AddSample(frame_distance);
 }
 
 }  // namespace media