Remove default begin frame sources from the renderer

cc/test/fake_layer_tree_host_impl_client.h

Index: cc/test/fake_layer_tree_host_impl_client.h
diff --git a/cc/test/fake_layer_tree_host_impl_client.h b/cc/test/fake_layer_tree_host_impl_client.h
index 93f222ca5bf29a4578ed544a29b9d74718147011..f257c8eaa583ee4268c6d9fa5ebaad8eb6183d42 100644
--- a/cc/test/fake_layer_tree_host_impl_client.h
+++ b/cc/test/fake_layer_tree_host_impl_client.h
@@ -14,8 +14,6 @@ class FakeLayerTreeHostImplClient : public LayerTreeHostImplClient {
  public:
   // LayerTreeHostImplClient implementation.
   void DidLoseOutputSurfaceOnImplThread() override {}
-  void CommitVSyncParameters(base::TimeTicks timebase,
-                             base::TimeDelta interval) override {}
   void SetBeginFrameSource(BeginFrameSource* source) override {}
   void SetEstimatedParentDrawTime(base::TimeDelta draw_time) override {}
   void DidSwapBuffersCompleteOnImplThread() override {}