Add GROUP_FILE ModelSafeGroup

chrome/browser/sync/glue/database_model_worker.h

-// Copyright (c) 2011 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_DATABASE_MODEL_WORKER_H_
-#define CHROME_BROWSER_SYNC_GLUE_DATABASE_MODEL_WORKER_H_
-#pragma once
-
-#include "base/callback.h"
-#include "chrome/browser/sync/engine/model_safe_worker.h"
-
-namespace base {
-class WaitableEvent;
-}
-
-namespace browser_sync {
-
-// A ModelSafeWorker for database models (eg. autofill) that accepts requests
-// from the syncapi that need to be fulfilled on the database thread.
-class DatabaseModelWorker : public browser_sync::ModelSafeWorker {
- public:
-  explicit DatabaseModelWorker() {}
-
-  // ModelSafeWorker implementation. Called on syncapi SyncerThread.
-  virtual void DoWorkAndWaitUntilDone(Callback0::Type* work);
-  virtual ModelSafeGroup GetModelSafeGroup();
-
- private:
-  void CallDoWorkAndSignalTask(Callback0::Type* work,
-                               base::WaitableEvent* done);
-
-  DISALLOW_COPY_AND_ASSIGN(DatabaseModelWorker);
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_GLUE_DATABASE_MODEL_WORKER_H_