Refactoring display configuration state to allow generic state objects

ash/wm/power_button_controller.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_WM_POWER_BUTTON_CONTROLLER_H_
 #define ASH_WM_POWER_BUTTON_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/session_state_animator.h"
 #include "base/basictypes.h"
@@ skipping 38 matching lines @@
 
   // Called when the current screen brightness changes.
   void OnScreenBrightnessChanged(double percent);
 
   // Called when the power or lock buttons are pressed or released.
   void OnPowerButtonEvent(bool down, const base::TimeTicks& timestamp);
   void OnLockButtonEvent(bool down, const base::TimeTicks& timestamp);
 
 #if defined(OS_CHROMEOS) && defined(USE_X11)
   // Overriden from ui::OutputConfigurator::Observer:
-  virtual void OnDisplayModeChanged(const std::vector<
-      ui::OutputConfigurator::OutputSnapshot>& outputs) OVERRIDE;
+  virtual void OnDisplayModeChanged(
+      const ui::OutputConfigurator::DisplayStateList& outputs) OVERRIDE;
 #endif
 
  private:
   friend class test::PowerButtonControllerTest;
 
   // Are the power or lock buttons currently held?
   bool power_button_down_;
   bool lock_button_down_;
 
   // Has the screen brightness been reduced to 0%?
   bool brightness_is_zero_;
 
   // True if an internal display is off while an external display is on (e.g.
   // for Chrome OS's docked mode, where a Chromebook's lid is closed while an
   // external display is connected).
   bool internal_display_off_and_external_display_on_;
 
   // Was a command-line switch set telling us that we're running on hardware
   // that misreports power button releases?
   bool has_legacy_power_button_;
 
   LockStateController* controller_; // Not owned.
 
   DISALLOW_COPY_AND_ASSIGN(PowerButtonController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_POWER_BUTTON_CONTROLLER_H_