Chrome sync: Put WeakPtrFactory members at the end

chrome/browser/sync/backend_migrator.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_SYNC_BACKEND_MIGRATOR_H_
 #define CHROME_BROWSER_SYNC_BACKEND_MIGRATOR_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
@@ skipping 78 matching lines @@
   syncer::UserShare* user_share_;
   ProfileSyncService* service_;
   DataTypeManager* manager_;
 
   State state_;
 
   ObserverList<MigrationObserver> migration_observers_;
 
   syncer::ModelTypeSet to_migrate_;
 
+  base::Closure migration_done_callback_;
+
   base::WeakPtrFactory<BackendMigrator> weak_ptr_factory_;
 
-  base::Closure migration_done_callback_;
-
   DISALLOW_COPY_AND_ASSIGN(BackendMigrator);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_BACKEND_MIGRATOR_H_