Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/ffmpeg_video_decoder_unittest.cc

Index: media/filters/ffmpeg_video_decoder_unittest.cc
diff --git a/media/filters/ffmpeg_video_decoder_unittest.cc b/media/filters/ffmpeg_video_decoder_unittest.cc
index 1fe0a654a848a753dd6f2418df69c9565a9f2531..72ca256ec53f971706f3f983ae182ff9cc2773e1 100644
--- a/media/filters/ffmpeg_video_decoder_unittest.cc
+++ b/media/filters/ffmpeg_video_decoder_unittest.cc
@@ -60,8 +60,7 @@ MATCHER(ContainsInvalidDataLog, "") {
 class FFmpegVideoDecoderTest : public testing::Test {
  public:
   FFmpegVideoDecoderTest()
-      : media_log_(new StrictMock<MockMediaLog>()),
-        decoder_(new FFmpegVideoDecoder(media_log_)),
+      : decoder_(new FFmpegVideoDecoder(&media_log_)),
         decode_cb_(base::Bind(&FFmpegVideoDecoderTest::DecodeDone,
                               base::Unretained(this))) {
     FFmpegGlue::InitializeFFmpeg();
@@ -205,7 +204,7 @@ class FFmpegVideoDecoderTest : public testing::Test {
 
   MOCK_METHOD1(DecodeDone, void(DecodeStatus));
 
-  scoped_refptr<StrictMock<MockMediaLog>> media_log_;
+  StrictMock<MockMediaLog> media_log_;
 
   base::MessageLoop message_loop_;
   std::unique_ptr<FFmpegVideoDecoder> decoder_;