Simplify VideoDecodeEngine interface by making everything synchronous.

media/base/mock_filters.h

Index: media/base/mock_filters.h
diff --git a/media/base/mock_filters.h b/media/base/mock_filters.h
index 8199b885fbd4e486fab876c1157c959230d17b91..841629d1527c2a55d82a53c3e58c11327d852619 100644
--- a/media/base/mock_filters.h
+++ b/media/base/mock_filters.h
@@ -187,12 +187,8 @@ class MockVideoDecoder : public VideoDecoder {
   MOCK_METHOD3(Initialize, void(DemuxerStream* stream,
                                 const base::Closure& callback,
                                 const StatisticsCallback& stats_callback));
-  MOCK_METHOD1(ProduceVideoFrame, void(scoped_refptr<VideoFrame>));
-  MOCK_METHOD0(natural_size, gfx::Size());
-
-  void VideoFrameReadyForTest(scoped_refptr<VideoFrame> frame) {
-    VideoDecoder::VideoFrameReady(frame);
-  }
+  MOCK_METHOD1(Read, void(const ReadCB& callback));
+  MOCK_METHOD0(natural_size, const gfx::Size&());
 
  protected:
   virtual ~MockVideoDecoder();