Remove completion callbacks from AudioRenderer::Play/Pause().

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 95c91d23b14016187a77e8821e96106c70122453..4771e145bd9b49b09079f0d4bd93a85242617991 100644
--- a/media/base/mock_filters.h
+++ b/media/base/mock_filters.h
@@ -146,8 +146,8 @@ class MockAudioRenderer : public AudioRenderer {
                                 const TimeCB& time_cb,
                                 const base::Closure& ended_cb,
                                 const PipelineStatusCB& error_cb));
-  MOCK_METHOD1(Play, void(const base::Closure& callback));
-  MOCK_METHOD1(Pause, void(const base::Closure& callback));
+  MOCK_METHOD0(Play, void());
+  MOCK_METHOD0(Pause, void());
   MOCK_METHOD1(Flush, void(const base::Closure& callback));
   MOCK_METHOD1(Stop, void(const base::Closure& callback));
   MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));