gpu: Add sync token dependencies to flush metadata.

gpu/command_buffer/client/client_test_helper.h

Index: gpu/command_buffer/client/client_test_helper.h
diff --git a/gpu/command_buffer/client/client_test_helper.h b/gpu/command_buffer/client/client_test_helper.h
index 31756c3526f7a0d33bdfec232ca83cfadefc7c83..f806fbbb6062ca2876c5e1c7baee19e801751dae 100644
--- a/gpu/command_buffer/client/client_test_helper.h
+++ b/gpu/command_buffer/client/client_test_helper.h
@@ -117,7 +117,8 @@ class MockClientGpuControl : public GpuControl {
   MOCK_METHOD1(IsFenceSyncReleased, bool(uint64_t release));
   MOCK_METHOD2(SignalSyncToken, void(const SyncToken& sync_token,
                                      const base::Closure& callback));
-  MOCK_METHOD1(CanWaitUnverifiedSyncToken, bool(const SyncToken*));
+  MOCK_METHOD1(WaitSyncTokenHint, void(const SyncToken&));
+  MOCK_METHOD1(CanWaitUnverifiedSyncToken, bool(const SyncToken&));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockClientGpuControl);