Mus+Ash: Use standard cc mechanism for surface lifetime.

services/ui/ws/window_server.cc

Index: services/ui/ws/window_server.cc
diff --git a/services/ui/ws/window_server.cc b/services/ui/ws/window_server.cc
index 0cc75afee9360603bd539d05a91e33e9086efdbc..ad3286e304cb863663784c32532c8a6f82abe32a 100644
--- a/services/ui/ws/window_server.cc
+++ b/services/ui/ws/window_server.cc
@@ -623,12 +623,6 @@ const ServerWindow* WindowServer::GetRootWindow(
   return display ? display->root_window() : nullptr;
 }
 
-void WindowServer::ScheduleSurfaceDestruction(ServerWindow* window) {
-  Display* display = display_manager_->GetDisplayContaining(window);
-  if (display)
-    display->ScheduleSurfaceDestruction(window);
-}
-
 void WindowServer::OnWindowDestroyed(ServerWindow* window) {
   ProcessWindowDeleted(window);
 }