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// 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_GLUE_HISTORY_MODEL_WORKER_H_
#define CHROME_BROWSER_SYNC_GLUE_HISTORY_MODEL_WORKER_H_
#pragma once
#include "chrome/browser/sync/engine/model_safe_worker.h"
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/cancelable_request.h"
class HistoryService;
namespace browser_sync {
// A ModelSafeWorker for history models that accepts requests
// from the syncapi that need to be fulfilled on the history thread.
class HistoryModelWorker : public browser_sync::ModelSafeWorker {
public:
explicit HistoryModelWorker(HistoryService* history_service);
virtual ~HistoryModelWorker();
// ModelSafeWorker implementation. Called on syncapi SyncerThread.
virtual SyncerError DoWorkAndWaitUntilDone(
const WorkCallback& work) OVERRIDE;
virtual ModelSafeGroup GetModelSafeGroup() OVERRIDE;
private:
scoped_refptr<HistoryService> history_service_;
// Helper object to make sure we don't leave tasks running on the history
// thread.
CancelableRequestConsumerT<int, 0> cancelable_consumer_;
DISALLOW_COPY_AND_ASSIGN(HistoryModelWorker);
};
} // namespace browser_sync
#endif // CHROME_BROWSER_SYNC_GLUE_HISTORY_MODEL_WORKER_H_
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