Add cc::RendererSettings for use in with cc::Display

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index c9ad47563b71cf2d2d53fa46a9359edaf3694e43..d559436188e9109c878cfee51ead7046bd57e123 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -431,6 +431,10 @@ void Compositor::SetLayerTreeDebugState(
   host_->SetDebugState(debug_state);
 }
 
+const cc::LayerTreeSettings& Compositor::GetLayerTreeSettings() const {
+  return host_->settings();
+}
+
 cc::SurfaceSequence Compositor::InsertSurfaceSequenceForNextFrame() {
   cc::SurfaceSequence sequence;
   sequence.id_namespace = surface_id_allocator_->id_namespace();