cc: Plumbing for BeginFrameSource based on Surfaces

components/mus/surfaces/top_level_display_client.cc

Index: components/mus/surfaces/top_level_display_client.cc
diff --git a/components/mus/surfaces/top_level_display_client.cc b/components/mus/surfaces/top_level_display_client.cc
index d7ec91e8688f834bb9c96d4de6055dfd82b9e61e..201ef9a3eb7af9e3bc576f641c6a1d41271f5f98 100644
--- a/components/mus/surfaces/top_level_display_client.cc
+++ b/components/mus/surfaces/top_level_display_client.cc
@@ -108,4 +108,10 @@ void TopLevelDisplayClient::ReturnResources(
   // TODO(fsamuel): Implement this.
 }
 
+void TopLevelDisplayClient::SetBeginFrameSource(
+    cc::BeginFrameSource* begin_frame_source) {
+  // TODO(tansell): Implement this.
+  NOTIMPLEMENTED();
+}
+
 }  // namespace mus