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

components/sync_driver/shared_change_processor_ref.h

-// Copyright 2014 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_SHARED_CHANGE_PROCESSOR_REF_H_
-#define COMPONENTS_SYNC_DRIVER_SHARED_CHANGE_PROCESSOR_REF_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "components/sync/api/sync_change_processor.h"
-#include "components/sync/api/sync_error_factory.h"
-#include "components/sync_driver/shared_change_processor.h"
-
-namespace sync_driver {
-
-// A syncer::SyncChangeProcessor stub for interacting with a refcounted
-// SharedChangeProcessor.
-class SharedChangeProcessorRef : public syncer::SyncChangeProcessor,
-                                 public syncer::SyncErrorFactory {
- public:
-  SharedChangeProcessorRef(
-      const scoped_refptr<SharedChangeProcessor>&
-          change_processor);
-  ~SharedChangeProcessorRef() override;
-
-  // syncer::SyncChangeProcessor implementation.
-  syncer::SyncError ProcessSyncChanges(
-      const tracked_objects::Location& from_here,
-      const syncer::SyncChangeList& change_list) override;
-  syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const override;
-  syncer::SyncError UpdateDataTypeContext(
-      syncer::ModelType type,
-      syncer::SyncChangeProcessor::ContextRefreshStatus refresh_status,
-      const std::string& context) override;
-
-  // syncer::SyncErrorFactory implementation.
-  syncer::SyncError CreateAndUploadError(
-      const tracked_objects::Location& from_here,
-      const std::string& message) override;
-
-  // Default copy and assign welcome (and safe due to refcounted-ness).
-
- private:
-  scoped_refptr<SharedChangeProcessor> change_processor_;
-};
-
-}  // namespace sync_driver
-
-#endif  // COMPONENTS_SYNC_DRIVER_SHARED_CHANGE_PROCESSOR_REF_H_