chromeos: Add DisplayPowerServiceProvider.

chromeos/dbus/power_manager_client.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 CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 43 matching lines @@
     // Called when the brightness is changed.
     // |level| is of the range [0, 100].
     // |user_initiated| is true if the action is initiated by the user.
     virtual void BrightnessChanged(int level, bool user_initiated) {}
 
     // Called when a screen is turned on or off to request that Chrome enable or
     // disable the corresponding CRTC for the output.
     // |power_on| The new state of the power setting.
     // |all_displays| True if this applies to all displays or false if it is
     // the internal display only.
+    // TODO(derat): Remove this.
     virtual void ScreenPowerSet(bool power_on, bool all_displays) {}
 
     // Called when power supply polling takes place.  |status| is a data
     // structure that contains the current state of the power supply.
     virtual void PowerChanged(const PowerSupplyStatus& status) {}
 
     // Called when we go idle for threshold time.
     virtual void IdleNotify(int64 threshold_secs) {}
 
     // Called when a request is received to dim or undim the screen in software
@@ skipping 135 matching lines @@
   // Create() should be used instead.
   PowerManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PowerManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_