Remove CreateDefaultDisplay().

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 e3da19d96ba8648de7e6b528c02776089600df95..6fc2028621bedb8e362d42941e131bc109e7091a 100644
--- a/services/ui/ws/window_server.cc
+++ b/services/ui/ws/window_server.cc
@@ -234,16 +234,6 @@ const WindowTree* WindowServer::GetTreeWithRoot(
   return nullptr;
 }
 
-void WindowServer::OnFirstWindowManagerWindowTreeFactoryReady() {
-  if (display_manager_->has_active_or_pending_displays())
-    return;
-
-  // We've been supplied a WindowManagerFactory and no displays have been
-  // created yet. Treat this as a signal to create a Display.
-  // TODO(sky): we need a better way to determine this, most likely a switch.
-  delegate_->CreateDefaultDisplays();
-}
-
 UserActivityMonitor* WindowServer::GetUserActivityMonitorForUser(
     const UserId& user_id) {
   DCHECK_GT(activity_monitor_map_.count(user_id), 0u);