ash: Get output info from chromeos instead of XRandR.

ash/display/display_change_observer_x11.h

 // Copyright (c) 2012 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.
 
 #ifndef ASH_DISPLAY_DISPLAY_CHANGE_OBSERVER_X11_H
 #define ASH_DISPLAY_DISPLAY_CHANGE_OBSERVER_X11_H
 
-#include <X11/Xlib.h>
-
-// Xlib.h defines RootWindow.
-#undef RootWindow
-
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
 #include "base/basictypes.h"
 #include "chromeos/display/output_configurator.h"
 
 namespace ash {
 namespace internal {
 
 // An object that observes changes in display configuration and
 // update DisplayManagers.
@@ skipping 14 matching lines @@
 
   // Overriden from chromeos::OutputConfigurator::Observer:
   virtual void OnDisplayModeChanged(
       const std::vector<chromeos::OutputConfigurator::OutputSnapshot>& outputs)
       OVERRIDE;
 
   // Overriden from ShellObserver:
   virtual void OnAppTerminating() OVERRIDE;
 
  private:
-  Display* xdisplay_;
-
-  ::Window x_root_window_;
-
-  int xrandr_event_base_;
-
   DISALLOW_COPY_AND_ASSIGN(DisplayChangeObserverX11);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_AURA_DISPLAY_CHANGE_OBSERVER_X11_H