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

ui/compositor/compositor.h

Index: ui/compositor/compositor.h
diff --git a/ui/compositor/compositor.h b/ui/compositor/compositor.h
index a5dc5d0cb6bc9cbb66b5588ddd6b9ca648eea791..e45f215869b8c01f2783420d4926b29dc17208e7 100644
--- a/ui/compositor/compositor.h
+++ b/ui/compositor/compositor.h
@@ -37,6 +37,7 @@ class ContextProvider;
 class Layer;
 class LayerTreeDebugState;
 class LayerTreeHost;
+class RendererSettings;
 class SharedBitmapManager;
 class SurfaceIdAllocator;
 }
@@ -270,6 +271,7 @@ class COMPOSITOR_EXPORT Compositor
 
   const cc::LayerTreeDebugState& GetLayerTreeDebugState() const;
   void SetLayerTreeDebugState(const cc::LayerTreeDebugState& debug_state);
+  const cc::RendererSettings& GetRendererSettings() const;
 
   LayerAnimatorCollection* layer_animator_collection() {
     return &layer_animator_collection_;