Remove reference counting from media::DemuxerStream and friends.

media/filters/audio_renderer_impl_unittest.cc

Index: media/filters/audio_renderer_impl_unittest.cc
diff --git a/media/filters/audio_renderer_impl_unittest.cc b/media/filters/audio_renderer_impl_unittest.cc
index 2a3fef14bb0953fb8628b14f93872c4bb4c2a166..cb8024e264323f9fd8c6f59f8ec436ef6ef2ffa3 100644
--- a/media/filters/audio_renderer_impl_unittest.cc
+++ b/media/filters/audio_renderer_impl_unittest.cc
@@ -39,13 +39,12 @@ class AudioRendererImplTest : public ::testing::Test {
  public:
   // Give the decoder some non-garbage media properties.
   AudioRendererImplTest()
-      : demuxer_stream_(new MockDemuxerStream()),
-        decoder_(new MockAudioDecoder()),
+      : decoder_(new MockAudioDecoder()),
         audio_config_(kCodecVorbis, kSampleFormatPlanarF32,
                       CHANNEL_LAYOUT_STEREO, 44100, NULL, 0, false) {
-    EXPECT_CALL(*demuxer_stream_, type())
+    EXPECT_CALL(demuxer_stream_, type())
         .WillRepeatedly(Return(DemuxerStream::AUDIO));
-    EXPECT_CALL(*demuxer_stream_, audio_decoder_config())
+    EXPECT_CALL(demuxer_stream_, audio_decoder_config())
         .WillRepeatedly(ReturnRef(audio_config_));
 
     // Used to save callbacks and run them at a later time.
@@ -123,7 +122,7 @@ class AudioRendererImplTest : public ::testing::Test {
 
     WaitableMessageLoopEvent event;
     renderer_->Initialize(
-        demuxer_stream_,
+        &demuxer_stream_,
         event.GetPipelineStatusCB(),
         base::Bind(&AudioRendererImplTest::OnStatistics,
                    base::Unretained(this)),
@@ -366,7 +365,7 @@ class AudioRendererImplTest : public ::testing::Test {
     base::ResetAndReturn(&read_cb_).Run(status, buffer);
   }
 
-  scoped_refptr<MockDemuxerStream> demuxer_stream_;
+  MockDemuxerStream demuxer_stream_;
   MockAudioDecoder* decoder_;
 
   // Used for stubbing out time in the audio callback thread.