Add methods for controlling keyboard brightness.

chromeos/dbus/power_manager_client.cc

Index: chromeos/dbus/power_manager_client.cc
diff --git a/chromeos/dbus/power_manager_client.cc b/chromeos/dbus/power_manager_client.cc
index d1e7fb54b97c75c645c3d6d3856ab76a844dced3..7a523688660ca1d598956ac8d229223e404c00b3 100644
--- a/chromeos/dbus/power_manager_client.cc
+++ b/chromeos/dbus/power_manager_client.cc
@@ -141,6 +141,14 @@ class PowerManagerClientImpl : public PowerManagerClient {
     SimpleMethodCallToPowerManager(power_manager::kIncreaseScreenBrightness);
   }
 
+  virtual void DecreaseKeyboardBrightness() OVERRIDE {
+    SimpleMethodCallToPowerManager(power_manager::kDecreaseKeyboardBrightness);
+  }
+
+  virtual void IncreaseKeyboardBrightness() OVERRIDE {
+    SimpleMethodCallToPowerManager(power_manager::kIncreaseKeyboardBrightness);
+  }
+
   virtual void SetScreenBrightnessPercent(double percent, bool gradual) {
     dbus::MethodCall method_call(
         power_manager::kPowerManagerInterface,
@@ -559,6 +567,14 @@ class PowerManagerClientStubImpl : public PowerManagerClient {
     callback.Run(brightness_);
   }
 
+  virtual void DecreaseKeyboardBrightness() OVERRIDE {
+    VLOG(1) << "Requested to descrease keyboard brightness";
+  }
+
+  virtual void IncreaseKeyboardBrightness() OVERRIDE {
+    VLOG(1) << "Requested to increase keyboard brightness";
+  }
+
   virtual void RequestStatusUpdate(UpdateRequestType update_type) OVERRIDE {
     if (update_type == UPDATE_INITIAL) {
       Update();