Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/formats/mp4/hevc.h

 // Copyright 2015 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_HEVC_H_
 #define MEDIA_FORMATS_MP4_HEVC_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 46 matching lines @@
     HVCCNALArray(const HVCCNALArray& other);
     ~HVCCNALArray();
     uint8_t first_byte;
     std::vector<HVCCNALUnit> units;
   };
   std::vector<HVCCNALArray> arrays;
 
   VideoCodecProfile GetVideoProfile() const;
 
  private:
-  bool ParseInternal(BufferReader* reader,
-                     const scoped_refptr<MediaLog>& media_log);
+  bool ParseInternal(BufferReader* reader, MediaLog* media_log);
 };
 
 class MEDIA_EXPORT HEVC {
  public:
   static bool ConvertConfigToAnnexB(
       const HEVCDecoderConfigurationRecord& hevc_config,
       std::vector<uint8_t>* buffer);
 
   static bool InsertParamSetsAnnexB(
       const HEVCDecoderConfigurationRecord& hevc_config,
@@ skipping 26 matching lines @@
 
  private:
   ~HEVCBitstreamConverter() override;
   std::unique_ptr<HEVCDecoderConfigurationRecord> hevc_config_;
 };
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP4_HEVC_H_