[Chrome OS] Plumb new error codes from SignedSettings to consumers of the API

chrome/browser/chromeos/login/login_performer.h

 // Copyright (c) 2010 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_LOGIN_PERFORMER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_PERFORMER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 65 matching lines @@
   virtual void OnLoginSuccess(
       const std::string& username,
       const std::string& password,
       const GaiaAuthConsumer::ClientLoginResult& credentials,
       bool pending_requests);
   virtual void OnOffTheRecordLoginSuccess();
   virtual void OnPasswordChangeDetected(
       const GaiaAuthConsumer::ClientLoginResult& credentials);
 
   // SignedSettingsHelper::Callback implementation:
-  virtual void OnCheckWhiteListCompleted(bool success,
+  virtual void OnCheckWhitelistCompleted(SignedSettings::ReturnCode code,
                                          const std::string& email);
 
   // NotificationObserver implementation:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Performs login with the |username| and |password| specified.
   void Login(const std::string& username, const std::string& password);
 
@@ skipping 82 matching lines @@
   bool screen_lock_requested_;
 
   ScopedRunnableMethodFactory<LoginPerformer> method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginPerformer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_PERFORMER_H_