Remove #pragma once from sync

sync/internal_api/public/sessions/sync_source_info.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_SESSIONS_SYNC_SOURCE_INFO_H_
 #define SYNC_INTERNAL_API_PUBLIC_SESSIONS_SYNC_SOURCE_INFO_H_
-#pragma once
 
 #include "base/basictypes.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/base/model_type_payload_map.h"
 #include "sync/protocol/sync.pb.h"
 
 namespace base {
 class DictionaryValue;
 }
 
@@ skipping 15 matching lines @@
   base::DictionaryValue* ToValue() const;
 
   sync_pb::GetUpdatesCallerInfo::GetUpdatesSource updates_source;
   syncer::ModelTypePayloadMap types;
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_SESSIONS_SYNC_SOURCE_INFO_H_