Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/ffmpeg_video_decoder.h

 // Copyright (c) 2012 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_FILTERS_FFMPEG_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_
 
 #include <list>
 #include <memory>
 
@@ skipping 11 matching lines @@
 
 namespace media {
 
 class DecoderBuffer;
 class MediaLog;
 
 class MEDIA_EXPORT FFmpegVideoDecoder : public VideoDecoder {
  public:
   static bool IsCodecSupported(VideoCodec codec);
 
-  explicit FFmpegVideoDecoder(scoped_refptr<MediaLog> media_log);
+  explicit FFmpegVideoDecoder(MediaLog* media_log);
   ~FFmpegVideoDecoder() override;
 
   // Allow decoding of individual NALU. Entire frames are required by default.
   // Disables low-latency mode. Must be called before Initialize().
   void set_decode_nalus(bool decode_nalus) { decode_nalus_ = decode_nalus; }
 
   // VideoDecoder implementation.
   std::string GetDisplayName() const override;
   void Initialize(const VideoDecoderConfig& config,
                   bool low_delay,
@@ skipping 25 matching lines @@
 
   // Handles (re-)initializing the decoder with a (new) config.
   // Returns true if initialization was successful.
   bool ConfigureDecoder(bool low_delay);
 
   // Releases resources associated with |codec_context_| and |av_frame_|
   // and resets them to NULL.
   void ReleaseFFmpegResources();
 
   base::ThreadChecker thread_checker_;
-  scoped_refptr<MediaLog> media_log_;
+  MediaLog* media_log_;
 
   DecoderState state_;
 
   OutputCB output_cb_;
 
   // FFmpeg structures owned by this object.
   std::unique_ptr<AVCodecContext, ScopedPtrAVFreeContext> codec_context_;
   std::unique_ptr<AVFrame, ScopedPtrAVFreeFrame> av_frame_;
 
   VideoDecoderConfig config_;
 
   VideoFramePool frame_pool_;
 
   bool decode_nalus_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_