Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/formats/mp4/dolby_vision.h

 // Copyright 2017 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_DOLBY_VISION_H_
 #define MEDIA_FORMATS_MP4_DOLBY_VISION_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "media/base/media_export.h"
 #include "media/formats/mp4/box_definitions.h"
 
 namespace media {
 
 namespace mp4 {
 
 // The structure of the configuration is defined in Dolby Streams Within the ISO
 // Base Media File Format v1.1 section 3.2.
 struct MEDIA_EXPORT DolbyVisionConfiguration : Box {
   DECLARE_BOX_METHODS(DolbyVisionConfiguration);
 
   // Parses DolbyVisionConfiguration data encoded in |data|.
   // Note: This method is intended to parse data outside the MP4StreamParser
   //       context and therefore the box header is not expected to be present
   //       in |data|.
   // Returns true if |data| was successfully parsed.
-  bool Parse(const uint8_t* data, int data_size);
+  bool ParseForTesting(const uint8_t* data, int data_size);
 
   uint8_t dv_version_major;
   uint8_t dv_version_minor;
   uint8_t dv_profile;
   uint8_t dv_level;
   uint8_t rpu_present_flag;
   uint8_t el_present_flag;
   uint8_t bl_present_flag;
 
   VideoCodecProfile codec_profile;
 
  private:
-  bool ParseInternal(BufferReader* reader,
-                     const scoped_refptr<MediaLog>& media_log);
+  bool ParseInternal(BufferReader* reader, MediaLog* media_log);
 };
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP4_DOLBY_VISION_H_