chromeos: Export SetDisplaySoftwareDimming D-Bus method.

chrome/browser/chromeos/dbus/display_power_service_provider.h

 // Copyright (c) 2013 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 CHROME_BROWSER_CHROMEOS_DBUS_DISPLAY_POWER_SERVICE_PROVIDER_H_
 #define CHROME_BROWSER_CHROMEOS_DBUS_DISPLAY_POWER_SERVICE_PROVIDER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/dbus/cros_dbus_service.h"
 #include "dbus/exported_object.h"
 
 namespace dbus {
 class MethodCall;
 class Response;
 }
 
 namespace chromeos {
 
-// This class exports a "SetDisplayPower" D-Bus method that the power
-// manager calls to instruct Chrome to turn various displays on or off.
+// This class exports "SetDisplayPower" and "SetDisplaySoftwareDimming"
+// D-Bus methods that the power manager calls to instruct Chrome to turn
+// various displays on or off or dim them.
 class DisplayPowerServiceProvider
     : public CrosDBusService::ServiceProviderInterface {
  public:
   DisplayPowerServiceProvider();
   virtual ~DisplayPowerServiceProvider();
 
   // CrosDBusService::ServiceProviderInterface overrides:
   virtual void Start(
       scoped_refptr<dbus::ExportedObject> exported_object) OVERRIDE;
 
  private:
-  // Called from ExportedObject when SetDisplayPower() is exported as a D-Bus
+  // Called from ExportedObject when a handler is exported as a D-Bus
   // method or failed to be exported.
   void OnExported(const std::string& interface_name,
                   const std::string& method_name,
                   bool success);
 
-  // Called on UI thread in response to a D-Bus request.
+  // Called on UI thread in response to D-Bus requests.
   void SetDisplayPower(dbus::MethodCall* method_call,
                        dbus::ExportedObject::ResponseSender response_sender);
+  void SetDisplaySoftwareDimming(
+      dbus::MethodCall* method_call,
+      dbus::ExportedObject::ResponseSender response_sender);
 
   // Keep this last so that all weak pointers will be invalidated at the
   // beginning of destruction.
   base::WeakPtrFactory<DisplayPowerServiceProvider> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayPowerServiceProvider);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_DBUS_DISPLAY_POWER_SERVICE_PROVIDER_H_