Fix remaining WeakPtrFactory ordering problems

chrome/browser/ui/webui/signin/user_manager_screen_handler.h

 // Copyright 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_UI_WEBUI_SIGNIN_USER_MANAGER_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SIGNIN_USER_MANAGER_SCREEN_HANDLER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 101 matching lines @@
   // Login password, held during on-line auth for saving later if correct.
   std::string password_attempt_;
 
   // URL hash, used to key post-profile actions if present.
   std::string url_hash_;
 
   typedef std::map<std::string, ScreenlockBridge::LockHandler::AuthType>
       UserAuthTypeMap;
   UserAuthTypeMap user_auth_type_map_;
 
+  content::NotificationRegistrar registrar_;
+
   base::WeakPtrFactory<UserManagerScreenHandler> weak_ptr_factory_;
 
-  content::NotificationRegistrar registrar_;
-
   DISALLOW_COPY_AND_ASSIGN(UserManagerScreenHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SIGNIN_USER_MANAGER_SCREEN_HANDLER_H_