Add methods for controlling keyboard brightness.

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 101 matching lines @@
 
   // Set the screen brightness to |percent|, in the range [0.0, 100.0].
   // If |gradual| is true, the transition will be animated.
   virtual void SetScreenBrightnessPercent(double percent, bool gradual) = 0;
 
   // Asynchronously gets the current screen brightness, in the range
   // [0.0, 100.0].
   virtual void GetScreenBrightnessPercent(
       const GetScreenBrightnessPercentCallback& callback) = 0;
 
+  // Decreases the keyboard brightness.
+  virtual void DecreaseKeyboardBrightness() = 0;
+
+  // Increases the keyboard brightness.
+  virtual void IncreaseKeyboardBrightness() = 0;
+
   // Request for power supply status update.
   virtual void RequestStatusUpdate(UpdateRequestType update_type) = 0;
 
   // Requests restart of the system.
   virtual void RequestRestart() = 0;
 
   // Requests shutdown of the system.
   virtual void RequestShutdown() = 0;
 
   // Notifies PowerManager that screen lock has been completed.
@@ skipping 53 matching lines @@
   // Create() should be used instead.
   PowerManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PowerManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_