gpu: Add sync token dependencies to flush metadata.

cc/test/test_context_support.cc

Index: cc/test/test_context_support.cc
diff --git a/cc/test/test_context_support.cc b/cc/test/test_context_support.cc
index 8c49d11bab351674f23bf0cb1032d90d5ae4c82a..02af05542c111dee2f41e9c8c6f94c5125e0665c 100644
--- a/cc/test/test_context_support.cc
+++ b/cc/test/test_context_support.cc
@@ -27,8 +27,7 @@ void TestContextSupport::SignalSyncToken(const gpu::SyncToken& sync_token,
                             weak_ptr_factory_.GetWeakPtr()));
 }
 
-bool TestContextSupport::IsSyncTokenSignalled(
-    const gpu::SyncToken& sync_token) {
+bool TestContextSupport::IsSyncTokenSignaled(const gpu::SyncToken& sync_token) {
   return true;
 }