Remove usages of XInternAtom

ui/aura/test/ui_controls_factory_aurax11.cc

Index: ui/aura/test/ui_controls_factory_aurax11.cc
diff --git a/ui/aura/test/ui_controls_factory_aurax11.cc b/ui/aura/test/ui_controls_factory_aurax11.cc
index ce23851efddcee0d0934b7c45cea0d64fcd4091c..134264569b8df76f15f63a9b7bb9af1f9cd66970 100644
--- a/ui/aura/test/ui_controls_factory_aurax11.cc
+++ b/ui/aura/test/ui_controls_factory_aurax11.cc
@@ -38,7 +38,7 @@ unsigned button_down_mask = 0;
 
 // Returns atom that indidates that the XEvent is marker event.
 Atom MarkerEventAtom() {
-  return XInternAtom(gfx::GetXDisplay(), "marker_event", False);
+  return ui::GetAtom("marker_event");
 }
 
 // Returns true when the event is a marker event.