Introduce a FLUSHED state in media::RendererImpl

media/renderers/renderer_impl_unittest.cc

Index: media/renderers/renderer_impl_unittest.cc
diff --git a/media/renderers/renderer_impl_unittest.cc b/media/renderers/renderer_impl_unittest.cc
index 77480f96ac2c945bf0ed02cbcc10d511c10eb559..bbbaa2c27b3410558ac34600c65d297ee3769ed9 100644
--- a/media/renderers/renderer_impl_unittest.cc
+++ b/media/renderers/renderer_impl_unittest.cc
@@ -492,7 +492,10 @@ TEST_F(RendererImplTest, StartPlayingFromWithPlaybackRate) {
 
 TEST_F(RendererImplTest, FlushAfterInitialization) {
   InitializeWithAudioAndVideo();
-  Flush(true);
+  EXPECT_CALL(callbacks_, OnFlushed());
+  renderer_impl_->Flush(
+      base::Bind(&CallbackHelper::OnFlushed, base::Unretained(&callbacks_)));
+  base::RunLoop().RunUntilIdle();
 }
 
 TEST_F(RendererImplTest, FlushAfterPlay) {