PART1: Initiated the SignedSettings refactoring.

chrome/browser/chromeos/login/login_performer.h

 // Copyright (c) 2011 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>
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/task.h"
 #include "chrome/browser/chromeos/login/authenticator.h"
 #include "chrome/browser/chromeos/login/login_status_consumer.h"
-#include "chrome/browser/chromeos/login/signed_settings_helper.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 
 namespace chromeos {
 
 // This class encapsulates sign in operations.
 // Sign in is performed in a way that offline auth is executed first.
 // Once offline auth is OK - user homedir is mounted, UI is launched.
@@ skipping 18 matching lines @@
 // CAPTCHA dialog, password input.
 // If |delegate_| is NULL that does mean that LoginPerformer instance
 // is waiting for successful online login or blocked on online login failure.
 // In case of failure password/captcha
 // input & error messages display is dedicated to ScreenLocker instance.
 //
 // 2 things make LoginPerfrormer instance exist longer:
 // 1. ScreenLock active (pending correct new password input)
 // 2. Pending online auth request.
 class LoginPerformer : public LoginStatusConsumer,
-                       public SignedSettingsHelper::Callback,
                        public NotificationObserver,
                        public ProfileManagerObserver {
  public:
   // Delegate class to get notifications from the LoginPerformer.
   class Delegate : public LoginStatusConsumer {
    public:
     virtual ~Delegate() {}
     virtual void WhiteListCheckFailed(const std::string& email) = 0;
   };
 
@@ skipping 55 matching lines @@
     AUTH_MODE_EXTENSION
   } AuthorizationMode;
   AuthorizationMode auth_mode() const { return auth_mode_; }
 
  private:
   // NotificationObserver implementation:
   virtual void Observe(int type,
                        const NotificationSource& source,
                        const NotificationDetails& details) OVERRIDE;
 
-  // SignedSettingsHelper::Callback implementation:
-  virtual void OnCheckWhitelistCompleted(SignedSettings::ReturnCode code,
-                                         const std::string& email) OVERRIDE;
-
   // ProfileManagerObserver implementation:
   virtual void OnProfileCreated(Profile* profile, Status status) OVERRIDE;
 
   // Requests screen lock and subscribes to screen lock notifications.
   void RequestScreenLock();
 
   // Requests screen unlock.
   void RequestScreenUnlock();
 
   // Resolves initial LoginFailure::NETWORK_AUTH_FAILED error i.e.
@@ skipping 68 matching lines @@
   bool using_oauth_;
 
   base::WeakPtrFactory<LoginPerformer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginPerformer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_PERFORMER_H_