Remove VideoRenderer::Pause() as it serves no real purpose.

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 4771e145bd9b49b09079f0d4bd93a85242617991..31dec4e64fee2462e0bd692001bf81d63728c0c7 100644
--- a/media/base/mock_filters.h
+++ b/media/base/mock_filters.h
@@ -123,7 +123,6 @@ class MockVideoRenderer : public VideoRenderer {
                                 const TimeDeltaCB& get_time_cb,
                                 const TimeDeltaCB& get_duration_cb));
   MOCK_METHOD1(Play, void(const base::Closure& callback));
-  MOCK_METHOD1(Pause, void(const base::Closure& callback));
   MOCK_METHOD1(Flush, void(const base::Closure& callback));
   MOCK_METHOD2(Preroll, void(base::TimeDelta time, const PipelineStatusCB& cb));
   MOCK_METHOD1(Stop, void(const base::Closure& callback));