[Sync] Move //components/sync_driver to //components/sync/driver.

components/sync_driver/glue/ui_model_worker.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 COMPONENTS_SYNC_DRIVER_GLUE_UI_MODEL_WORKER_H_
-#define COMPONENTS_SYNC_DRIVER_GLUE_UI_MODEL_WORKER_H_
-
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/single_thread_task_runner.h"
-#include "base/synchronization/condition_variable.h"
-#include "base/synchronization/lock.h"
-#include "components/sync/base/unrecoverable_error_info.h"
-#include "components/sync/engine/model_safe_worker.h"
-
-namespace browser_sync {
-
-// A syncer::ModelSafeWorker for UI models (e.g. bookmarks) that
-// accepts work requests from the syncapi that need to be fulfilled
-// from the MessageLoop home to the native model.
-class UIModelWorker : public syncer::ModelSafeWorker {
- public:
-  UIModelWorker(const scoped_refptr<base::SingleThreadTaskRunner>& ui_thread,
-                syncer::WorkerLoopDestructionObserver* observer);
-
-  // syncer::ModelSafeWorker implementation. Called on syncapi SyncerThread.
-  void RegisterForLoopDestruction() override;
-  syncer::ModelSafeGroup GetModelSafeGroup() override;
-
- protected:
-  syncer::SyncerError DoWorkAndWaitUntilDoneImpl(
-      const syncer::WorkCallback& work) override;
-
- private:
-  ~UIModelWorker() override;
-
-  // A reference to the UI thread's task runner.
-  const scoped_refptr<base::SingleThreadTaskRunner> ui_thread_;
-
-  DISALLOW_COPY_AND_ASSIGN(UIModelWorker);
-};
-
-}  // namespace browser_sync
-
-#endif  // COMPONENTS_SYNC_DRIVER_GLUE_UI_MODEL_WORKER_H_