Simplify adding callbacks.

chrome/browser/ui/webui/chromeos/login/reset_screen_handler.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 CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_RESET_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_RESET_SCREEN_HANDLER_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/chromeos/login/screens/reset_screen_actor.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "content/public/browser/web_ui.h"
 
-namespace base {
-class DictionaryValue;
-class ListValue;
-}
-
 namespace chromeos {
 
 // WebUI implementation of ResetScreenActor.
 class ResetScreenHandler : public ResetScreenActor,
                            public BaseScreenHandler {
  public:
   ResetScreenHandler();
   virtual ~ResetScreenHandler();
 
   // ResetScreenActor implementation:
   virtual void PrepareToShow() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
   virtual void SetDelegate(Delegate* delegate) OVERRIDE;
 
   // BaseScreenHandler implementation:
   virtual void DeclareLocalizedValues(LocalizedValuesBuilder* builder) OVERRIDE;
   virtual void Initialize() OVERRIDE;
 
   // WebUIMessageHandler implementation:
   virtual void RegisterMessages() OVERRIDE;
 
  private:
   // JS messages handlers.
-  void HandleOnCancel(const base::ListValue* args);
-  void HandleOnReset(const base::ListValue* args);
+  void HandleOnCancel();
+  void HandleOnReset();
 
   Delegate* delegate_;
 
   // Keeps whether screen should be shown right after initialization.
   bool show_on_init_;
 
   DISALLOW_COPY_AND_ASSIGN(ResetScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_RESET_SCREEN_HANDLER_H_