Mus: Remove CompositorFrameSinkType

services/ui/public/interfaces/window_tree_constants.mojom

Index: services/ui/public/interfaces/window_tree_constants.mojom
diff --git a/services/ui/public/interfaces/window_tree_constants.mojom b/services/ui/public/interfaces/window_tree_constants.mojom
index af7d9d0f0de03c267ecccf9f6c55c0b518be5bb4..c23d42d22c0191109cb3b5f861d38cdd8a611491 100644
--- a/services/ui/public/interfaces/window_tree_constants.mojom
+++ b/services/ui/public/interfaces/window_tree_constants.mojom
@@ -29,23 +29,6 @@ struct WindowData {
   bool visible;
 };
 
-// Each Window has support for two surfaces. Generally the |DEFAULT| surface
-// is used. The |UNDERLAY| surface is useful if the owner of a window wants to
-// to Embed() another client and at the same time draw something under the
-// embedded apps representation.
-// TODO(fsamuel): Remove this once window decorations are no longer underlay
-// surfaces. http://crbug.com/647852.
-enum CompositorFrameSinkType {
-  // Only the owner of a window may obtain this surface.
-  // The window manager can change the offset of this by way of
-  // SetUnderlaySurfaceOffsetAndExtendedHitArea().
-  UNDERLAY,
-
-  // Only the embedded app may obtain this surface. If an app is not embedded
-  // in the Window than the owner may also render to this surface as well.
-  DEFAULT,
-};
-
 // The result of an input event sent to a client app.
 enum EventResult {
   HANDLED,