Remove #pragma once from sync

sync/notifier/chrome_system_resources.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.
 //
 // Simple system resources class that uses the current message loop
 // for scheduling.  Assumes the current message loop is already
 // running.
 
 #ifndef SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
 #define SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
-#pragma once
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/threading/non_thread_safe.h"
@@ skipping 120 matching lines @@
   scoped_ptr<ChromeLogger> logger_;
   scoped_ptr<ChromeScheduler> internal_scheduler_;
   scoped_ptr<ChromeScheduler> listener_scheduler_;
   scoped_ptr<ChromeStorage> storage_;
   PushClientChannel push_client_channel_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_