WIP: Surface Synchronization System

services/ui/public/interfaces/window_manager.mojom

Index: services/ui/public/interfaces/window_manager.mojom
diff --git a/services/ui/public/interfaces/window_manager.mojom b/services/ui/public/interfaces/window_manager.mojom
index fd055b20442eb80d96f6f7ebad2bb7a99989daf8..5e4550d21dc9d4ea49844d27e9f99f5f95b47379 100644
--- a/services/ui/public/interfaces/window_manager.mojom
+++ b/services/ui/public/interfaces/window_manager.mojom
@@ -5,6 +5,7 @@
 module ui.mojom;
 
 import "cc/ipc/frame_sink_id.mojom";
+import "cc/ipc/local_surface_id.mojom";
 import "services/ui/public/interfaces/cursor.mojom";
 import "services/ui/public/interfaces/event_matcher.mojom";
 import "services/ui/public/interfaces/window_manager_constants.mojom";
@@ -247,6 +248,9 @@ interface WindowManagerClient {
   AddAccelerators(array<WmAccelerator> accelerators) => (bool success);
   RemoveAccelerator(uint32 id);
 
+  WmSetBoundsResponse(uint32 window_manager_change_id, gfx.mojom.Rect bounds,
+                      cc.mojom.LocalSurfaceId local_surface_id);
+
   // The window manager has completed a request with the specific change id.
   WmResponse(uint32 change_id, bool response);