Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/formats/mp4/mp4_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_MP4_MP4_STREAM_PARSER_H_
 #define MEDIA_FORMATS_MP4_MP4_STREAM_PARSER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 19 matching lines @@
   MP4StreamParser(const std::set<int>& audio_object_types, bool has_sbr);
   ~MP4StreamParser() override;
 
   void Init(const InitCB& init_cb,
             const NewConfigCB& config_cb,
             const NewBuffersCB& new_buffers_cb,
             bool ignore_text_tracks,
             const EncryptedMediaInitDataCB& encrypted_media_init_data_cb,
             const NewMediaSegmentCB& new_segment_cb,
             const EndMediaSegmentCB& end_of_segment_cb,
-            const scoped_refptr<MediaLog>& media_log) override;
+            MediaLog* media_log) override;
   void Flush() override;
   bool Parse(const uint8_t* buf, int size) override;
 
  private:
   enum State {
     kWaitingForInit,
     kParsingBoxes,
     kWaitingForSampleData,
     kEmittingSamples,
     kError
@@ skipping 36 matching lines @@
   // computed.
   bool ComputeHighestEndOffset(const MovieFragment& moof);
 
   State state_;
   InitCB init_cb_;
   NewConfigCB config_cb_;
   NewBuffersCB new_buffers_cb_;
   EncryptedMediaInitDataCB encrypted_media_init_data_cb_;
   NewMediaSegmentCB new_segment_cb_;
   EndMediaSegmentCB end_of_segment_cb_;
-  scoped_refptr<MediaLog> media_log_;
+  MediaLog* media_log_;
 
   OffsetByteQueue queue_;
 
   // These two parameters are only valid in the |kEmittingSegments| state.
   //
   // |moof_head_| is the offset of the start of the most recently parsed moof
   // block. All byte offsets in sample information are relative to this offset,
   // as mandated by the Media Source spec.
   int64_t moof_head_;
   // |mdat_tail_| is the stream offset of the end of the current 'mdat' box.
@@ skipping 20 matching lines @@
   // Tracks the number of MEDIA_LOGS for skipping empty trun samples.
   int num_empty_samples_skipped_;
 
   DISALLOW_COPY_AND_ASSIGN(MP4StreamParser);
 };
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP4_MP4_STREAM_PARSER_H_