Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/formats/mpeg/mpeg1_audio_stream_parser.h

Index: media/formats/mpeg/mpeg1_audio_stream_parser.h
diff --git a/media/formats/mpeg/mpeg1_audio_stream_parser.h b/media/formats/mpeg/mpeg1_audio_stream_parser.h
index fc0ce35dac9fe80827cae66c93be7b3db6e66dfb..f162bd105556fa74f7c3d848d20cd80642da1f61 100644
--- a/media/formats/mpeg/mpeg1_audio_stream_parser.h
+++ b/media/formats/mpeg/mpeg1_audio_stream_parser.h
@@ -64,7 +64,7 @@ class MEDIA_EXPORT MPEG1AudioStreamParser : public MPEGAudioStreamParserBase {
   // Parses the header starting at |data|.
   // Assumption: size of array |data| should be at least |kHeaderSize|.
   // Returns false if the header is not valid.
-  static bool ParseHeader(const scoped_refptr<MediaLog>& media_log,
+  static bool ParseHeader(MediaLog* media_log,
                           const uint8_t* data,
                           Header* header);