Remove usages of XInternAtom

ui/aura/test/ui_controls_factory_aurax11.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 20 matching lines @@
 using ui_controls::MouseButton;
 using ui_controls::RIGHT;
 using ui_controls::UIControlsAura;
 using ui_controls::UP;
 
 // Mask of the buttons currently down.
 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.
 bool Matcher(const base::NativeEvent& event) {
   return event->xany.type == ClientMessage &&
       event->xclient.message_type == MarkerEventAtom();
 }
 
 class UIControlsX11 : public UIControlsAura {
  public:
@@ skipping 172 matching lines @@
 };
 
 }  // namespace
 
 UIControlsAura* CreateUIControlsAura(WindowTreeHost* host) {
   return new UIControlsX11(host);
 }
 
 }  // namespace test
 }  // namespace aura