Remove reference counting from media::Demuxer 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 863c317c214d2e502e0da4b0d633c219db030d7e..e9136eea8a15bb2d832d60051f796e2d7e26fc25 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 {
 
   MessageLoop message_loop_;
   scoped_ptr<FFmpegVideoDecoder> decoder_;
-  scoped_refptr<StrictMock<MockDemuxerStream> > demuxer_;
+  scoped_ptr<StrictMock<MockDemuxerStream> > demuxer_;
   MockStatisticsCB statistics_cb_;
   VideoDecoderConfig config_;