[Sync] Convert DTCs to be not RefCounted and NonThreadSafe.

components/sync/driver/sync_api_component_factory.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_SYNC_API_COMPONENT_FACTORY_H_
 #define COMPONENTS_SYNC_DRIVER_SYNC_API_COMPONENT_FACTORY_H_
 
 #include <memory>
 #include <string>
 
 #include "base/memory/weak_ptr.h"
+#include "components/sync/api/data_type_error_handler.h"
 #include "components/sync/api/syncable_service.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/core/attachments/attachment_service.h"
 #include "components/sync/driver/data_type_controller.h"
 
 namespace base {
 class FilePath;
 }  // namespace base
 
 namespace browser_sync {
 class SyncBackendHost;
 }  // namespace browser_sync
 
 namespace history {
 class HistoryBackend;
 }
 
 namespace invalidation {
 class InvalidationService;
 }  // namespace invalidation
 
 namespace syncer {
 class DataTypeDebugInfoListener;
-class DataTypeErrorHandler;
 class SyncableService;
 
 struct UserShare;
 }  // namespace syncer
 
 namespace sync_driver {
 
 class AssociatorInterface;
 class ChangeProcessor;
 class DataTypeEncryptionHandler;
@@ skipping 64 matching lines @@
       const base::WeakPtr<sync_driver::SyncPrefs>& sync_prefs,
       const base::FilePath& sync_folder) = 0;
 
   // Creating this in the factory helps us mock it out in testing.
   virtual std::unique_ptr<sync_driver::LocalDeviceInfoProvider>
   CreateLocalDeviceInfoProvider() = 0;
 
   // Legacy datatypes that need to be converted to the SyncableService API.
   virtual SyncComponents CreateBookmarkSyncComponents(
       sync_driver::SyncService* sync_service,
-      syncer::DataTypeErrorHandler* error_handler) = 0;
+      std::unique_ptr<syncer::DataTypeErrorHandler> error_handler) = 0;
 
   // Creates attachment service.
   // Note: Should only be called from the model type thread.
   //
   // |store_birthday| is the store birthday.  Must not be empty.
   //
   // |model_type| is the model type this AttachmentService will be used with.
   //
   // |delegate| is optional delegate for AttachmentService to notify about
   // asynchronous events (AttachmentUploaded). Pass NULL if delegate is not
   // provided. AttachmentService doesn't take ownership of delegate, the pointer
   // must be valid throughout AttachmentService lifetime.
   virtual std::unique_ptr<syncer::AttachmentService> CreateAttachmentService(
       std::unique_ptr<syncer::AttachmentStoreForSync> attachment_store,
       const syncer::UserShare& user_share,
       const std::string& store_birthday,
       syncer::ModelType model_type,
       syncer::AttachmentService::Delegate* delegate) = 0;
 };
 
 }  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_SYNC_API_COMPONENT_FACTORY_H_