Remove reference counting from media::DemuxerStream and friends.

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 1dbb14c4874e39f338a31d085fc3d903693bb8d1..994757d825b794947ac43f5c8615ab2c56f0fbe4 100644
--- a/media/filters/ffmpeg_video_decoder_unittest.cc
+++ b/media/filters/ffmpeg_video_decoder_unittest.cc
@@ -86,7 +86,7 @@ class FFmpegVideoDecoderTest : public testing::Test {
     EXPECT_CALL(*demuxer_, video_decoder_config())
         .WillRepeatedly(ReturnRef(config));
 
-    decoder_->Initialize(demuxer_, NewExpectedStatusCB(status),
+    decoder_->Initialize(demuxer_.get(), NewExpectedStatusCB(status),
                          base::Bind(&MockStatisticsCB::OnStatistics,
                                     base::Unretained(&statistics_cb_)));
 
@@ -200,7 +200,7 @@ class FFmpegVideoDecoderTest : public testing::Test {
 
   base::MessageLoop message_loop_;
   scoped_ptr<FFmpegVideoDecoder> decoder_;
-  scoped_refptr<StrictMock<MockDemuxerStream> > demuxer_;
+  scoped_ptr<StrictMock<MockDemuxerStream> > demuxer_;
   MockStatisticsCB statistics_cb_;
   VideoDecoderConfig config_;