DecreaseKeyboardBrightness   23 ash/system/chromeos/keyboard_brightness_controller.cc       DecreaseKeyboardBrightness();
DecreaseKeyboardBrightness   52 chromeos/dbus/fake_power_manager_client.h   virtual void DecreaseKeyboardBrightness() OVERRIDE;
DecreaseKeyboardBrightness  110 chromeos/dbus/power_manager_client.h   virtual void DecreaseKeyboardBrightness() = 0;