Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/audio_timestamp_validator.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/audio_timestamp_validator.h"
 
 namespace media {
 
 // Defines how many milliseconds of DecoderBuffer timestamp gap will be allowed
 // before warning the user. See CheckForTimestampGap(). Value of 50 chosen, as
 // this is low enough to catch issues early, but high enough to avoid noise for
 // containers like WebM that default to low granularity timestamp precision.
 const int kGapWarningThresholdMsec = 50;
 
 // Limits the number of adjustments to |audio_ts_offset_| in order to reach a
 // stable state where gaps between encoded timestamps match decoded output
 // intervals. See CheckForTimestampGap().
 const int kLimitTriesForStableTiming = 5;
 
 // Limits the milliseconds of difference between expected and actual timestamps
 // gaps to consider timestamp expectations "stable". 1 chosen because some
 // containers (WebM) default to millisecond timestamp precision. See
 // CheckForTimestampGap().
 const int kStableTimeGapThrsholdMsec = 1;
 
 AudioTimestampValidator::AudioTimestampValidator(
     const AudioDecoderConfig& decoder_config,
-    const scoped_refptr<MediaLog>& media_log)
+    MediaLog* media_log)
     : has_codec_delay_(decoder_config.codec_delay() > 0),
       media_log_(media_log),
       audio_base_ts_(kNoTimestamp),
       reached_stable_state_(false),
       num_unstable_audio_tries_(0),
       limit_unstable_audio_tries_(kLimitTriesForStableTiming),
       drift_warning_threshold_msec_(kGapWarningThresholdMsec) {
   DCHECK(decoder_config.IsValidConfig());
 }
 
@@ skipping 96 matching lines @@
     audio_output_ts_helper_.reset(
         new AudioTimestampHelper(audio_buffer->sample_rate()));
     audio_output_ts_helper_->SetBaseTimestamp(audio_base_ts_);
   }
 
   DVLOG(3) << __func__ << " " << audio_buffer->frame_count() << " frames";
   audio_output_ts_helper_->AddFrames(audio_buffer->frame_count());
 }
 
 }  // namespace media