Remove #pragma once from sync

sync/internal_api/public/user_share.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 SYNC_INTERNAL_API_PUBLIC_USER_SHARE_H_
 #define SYNC_INTERNAL_API_PUBLIC_USER_SHARE_H_
-#pragma once
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 
 namespace syncer {
 
 namespace syncable {
 class Directory;
 }
 
 // A UserShare encapsulates the syncable pieces that represent an authenticated
 // user and their data (share).
 // This encompasses all pieces required to build transaction objects on the
 // syncable share.
 struct UserShare {
   UserShare();
   ~UserShare();
 
   // The Directory itself, which is the parent of Transactions.
   scoped_ptr<syncable::Directory> directory;
 
   // The username of the sync user.
   std::string name;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_USER_SHARE_H_