Changing the Weakptr initialization order in chrome/browser/extension folder

chrome/browser/extensions/api/idle/idle_manager.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_EXTENSIONS_API_IDLE_IDLE_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDLE_IDLE_MANAGER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 108 matching lines @@
   void StopPolling();
   void UpdateIdleState();
   void UpdateIdleStateCallback(int idle_time);
 
   Profile* profile_;
 
   IdleState last_state_;
   MonitorMap monitors_;
 
   base::RepeatingTimer<IdleManager> poll_timer_;
-  base::WeakPtrFactory<IdleManager> weak_factory_;
 
   scoped_ptr<IdleTimeProvider> idle_time_provider_;
   scoped_ptr<EventDelegate> event_delegate_;
 
   base::ThreadChecker thread_checker_;
 
   // Listen to extension unloaded notification.
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
+  base::WeakPtrFactory<IdleManager> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(IdleManager);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDLE_IDLE_MANAGER_H_