Make FFmpegVideoDecoder defer a flush until the pending read completes.

media/filters/pipeline_integration_test.cc

Index: media/filters/pipeline_integration_test.cc
diff --git a/media/filters/pipeline_integration_test.cc b/media/filters/pipeline_integration_test.cc
index d52009deb0e34c99e01b5cda45a41124706796a2..f0a6d38e3c43dbc6b8e94c4fad8b50da1d982003 100644
--- a/media/filters/pipeline_integration_test.cc
+++ b/media/filters/pipeline_integration_test.cc
@@ -143,8 +143,7 @@ TEST_F(PipelineIntegrationTest, EncryptedPlayback) {
   Stop();
 }
 
-// TODO(acolwell): Fix flakiness http://crbug.com/109875
-TEST_F(PipelineIntegrationTest, DISABLED_SeekWhilePaused) {
+TEST_F(PipelineIntegrationTest, SeekWhilePaused) {
   ASSERT_TRUE(Start(GetTestDataURL("bear-320x240.webm"), PIPELINE_OK));
 
   base::TimeDelta duration(pipeline_->GetMediaDuration());
@@ -167,8 +166,7 @@ TEST_F(PipelineIntegrationTest, DISABLED_SeekWhilePaused) {
   ASSERT_TRUE(WaitUntilOnEnded());
 }
 
-// TODO(acolwell): Fix flakiness http://crbug.com/109875
-TEST_F(PipelineIntegrationTest, DISABLED_SeekWhilePlaying) {
+TEST_F(PipelineIntegrationTest, SeekWhilePlaying) {
   ASSERT_TRUE(Start(GetTestDataURL("bear-320x240.webm"), PIPELINE_OK));
 
   base::TimeDelta duration(pipeline_->GetMediaDuration());