[Sync] Move attachments code out of core/.

components/sync/driver/sync_api_component_factory_mock.cc

Index: components/sync/driver/sync_api_component_factory_mock.cc
diff --git a/components/sync/driver/sync_api_component_factory_mock.cc b/components/sync/driver/sync_api_component_factory_mock.cc
index 0848e8c96957878a66801f183109d559749ebde9..bbdd8556e0c6b6ed8dcbd79144047fdff3991933 100644
--- a/components/sync/driver/sync_api_component_factory_mock.cc
+++ b/components/sync/driver/sync_api_component_factory_mock.cc
@@ -6,8 +6,8 @@
 
 #include <utility>
 
+#include "components/sync/api/attachments/attachment_service.h"
 #include "components/sync/api/attachments/attachment_store.h"
-#include "components/sync/core/attachments/attachment_service_impl.h"
 #include "components/sync/device_info/local_device_info_provider_mock.h"
 #include "components/sync/driver/change_processor.h"
 #include "components/sync/driver/model_associator.h"
@@ -37,7 +37,7 @@ SyncApiComponentFactoryMock::CreateAttachmentService(
     const std::string& store_birthday,
     ModelType model_type,
     AttachmentService::Delegate* delegate) {
-  return AttachmentServiceImpl::CreateForTest();
+  return AttachmentService::CreateForTest();
 }
 
 SyncApiComponentFactory::SyncComponents