media: VideoRendererImpl: fix unit test on DrMemory bots

media/renderers/video_renderer_impl_unittest.cc

Index: media/renderers/video_renderer_impl_unittest.cc
diff --git a/media/renderers/video_renderer_impl_unittest.cc b/media/renderers/video_renderer_impl_unittest.cc
index 54ca695c1c199de79676236fd21faa9d133e207a..5e562a0de0deaa917790c484f21355565f68a64f 100644
--- a/media/renderers/video_renderer_impl_unittest.cc
+++ b/media/renderers/video_renderer_impl_unittest.cc
@@ -26,6 +26,7 @@
 using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::Invoke;
+using ::testing::Mock;
 using ::testing::NiceMock;
 using ::testing::Return;
 using ::testing::SaveArg;
@@ -481,6 +482,7 @@ TEST_F(VideoRendererImplTest, Underflow) {
     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
     StartPlayingFrom(0);
     event.RunAndWait();
+    Mock::VerifyAndClearExpectations(&mock_cb_);
   }
 
   // Advance time slightly. Frames should be dropped and we should NOT signal
@@ -499,6 +501,7 @@ TEST_F(VideoRendererImplTest, Underflow) {
     EXPECT_CALL(mock_cb_, Display(HasTimestamp(30))).Times(1);
     AdvanceTimeInMs(3000);  // Must match kTimeToDeclareHaveNothing.
     event.RunAndWait();
+    Mock::VerifyAndClearExpectations(&mock_cb_);
   }
 
   // Receiving end of stream should signal having enough.