Simplify adding callbacks.

chrome/browser/chromeos/login/managed/locally_managed_user_creation_screen.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_LOGIN_MANAGED_LOCALLY_MANAGED_USER_CREATION_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_MANAGED_LOCALLY_MANAGED_USER_CREATION_SCREEN_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 43 matching lines @@
   // WizardScreen implementation:
   virtual void PrepareToShow() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
   virtual std::string GetName() const OVERRIDE;
 
   // LocallyManagedUserCreationScreenHandler::Delegate implementation:
   virtual void OnExit() OVERRIDE;
   virtual void OnActorDestroyed(LocallyManagedUserCreationScreenHandler* actor)
       OVERRIDE;
-  virtual void CreateManagedUser(string16& display_name,
-                                 std::string& managed_user_password) OVERRIDE;
-  virtual void AuthenticateManager(std::string& manager_id,
-                                   std::string& manager_password) OVERRIDE;
+  virtual void CreateManagedUser(
+      const string16& display_name,
+      const std::string& managed_user_password) OVERRIDE;
+  virtual void AuthenticateManager(
+      const std::string& manager_id,
+      const std::string& manager_password) OVERRIDE;
   virtual void AbortFlow() OVERRIDE;
   virtual void FinishFlow() OVERRIDE;
   virtual void SelectPicture() OVERRIDE;
 
   // LocallyManagedUserController::StatusConsumer overrides.
   virtual void OnCreationError(LocallyManagedUserController::ErrorCode code,
                                bool recoverable) OVERRIDE;
   virtual void OnCreationSuccess() OVERRIDE;
 
   // ConnectivityStateHelperObserver implementation:
   virtual void OnPortalDetectionCompleted(
           const Network* network,
           const NetworkPortalDetector::CaptivePortalState& state) OVERRIDE;
  private:
   LocallyManagedUserCreationScreenHandler* actor_;
 
   scoped_ptr<LocallyManagedUserController> controller_;
 
   bool on_error_screen_;
   bool on_image_screen_;
 
   DISALLOW_COPY_AND_ASSIGN(LocallyManagedUserCreationScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MANAGED_LOCALLY_MANAGED_USER_CREATION_SCREEN_H_