Revert 105404 - [Sync] Refactor non-frontend DTC to handle new API properly.

chrome/browser/sync/glue/new_non_frontend_data_type_controller.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_NEW_NON_FRONTEND_DATA_TYPE_CONTROLLER_H_
-#define CHROME_BROWSER_SYNC_GLUE_NEW_NON_FRONTEND_DATA_TYPE_CONTROLLER_H_
-#pragma once
-
-#include "base/compiler_specific.h"
-#include "base/memory/weak_ptr.h"
-#include "chrome/browser/sync/glue/non_frontend_data_type_controller.h"
-#include "chrome/browser/sync/glue/shared_change_processor.h"
-
-class SyncableService;
-
-namespace browser_sync {
-
-class NewNonFrontendDataTypeController : public NonFrontendDataTypeController {
- public:
-  NewNonFrontendDataTypeController(
-      ProfileSyncFactory* profile_sync_factory,
-      Profile* profile);
-  virtual ~NewNonFrontendDataTypeController();
-
-  virtual void Start(StartCallback* start_callback) OVERRIDE;
-  virtual void Stop() OVERRIDE;
-
- protected:
-  NewNonFrontendDataTypeController();
-
-  // Overrides of NonFrontendDataTypeController methods.
-  virtual void StartAssociation() OVERRIDE;
-  virtual void StartDone(DataTypeController::StartResult result,
-                         DataTypeController::State new_state,
-                         const SyncError& error) OVERRIDE;
-
-  // Calls local_service_->StopSyncing() and releases our references to it and
-  // |shared_change_processor_|.
-  virtual void StopLocalService();
-  // Posts StopLocalService() to the datatype's thread.
-  virtual void StopLocalServiceAsync() = 0;
-
-  // Extract/create the syncable service from the profile and return a
-  // WeakHandle to it.
-  virtual base::WeakPtr<SyncableService> GetWeakPtrToSyncableService()
-      const = 0;
-
- private:
-  // Deprecated.
-  virtual bool StopAssociationAsync() OVERRIDE;
-  virtual void CreateSyncComponents() OVERRIDE;
-
-  // A weak pointer to the actual local syncable service, which performs all the
-  // real work. We do not own the object, and it is only safe to access on the
-  // DataType's thread.
-  // Lifetime: it gets set in StartAssociation() and released in
-  // StopLocalService().
-  base::WeakPtr<SyncableService> local_service_;
-
-  // The thread-safe layer between the datatype and the syncer. It allows us to
-  // disconnect both the datatype and ourselves from the syncer at shutdown
-  // time. All accesses to the syncer from any thread other than the UI thread
-  // should be through this. Once connected, it must be released on the
-  // datatype's thread (but if we never connect it we can destroy it on the UI
-  // thread as well).
-  // Lifetime: It gets created on the UI thread in Start(..), connected to
-  // the syncer in StartAssociation() on the datatype's thread, and if
-  // successfully connected released in StopLocalService() on the datatype's
-  // thread.
-  scoped_refptr<SharedChangeProcessor> shared_change_processor_;
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_GLUE_NEW_NON_FRONTEND_DATA_TYPE_CONTROLLER_H_