Revert of [Sync] Adds a new switch for enabling the new local server backend.

components/browser_sync/profile_sync_service_unittest.cc

Index: components/browser_sync/profile_sync_service_unittest.cc
diff --git a/components/browser_sync/profile_sync_service_unittest.cc b/components/browser_sync/profile_sync_service_unittest.cc
index b0e71fb1690710d32c86423cf22da4ffee03acf2..1ef971859a7b8999ba60e513169d8d642a79d0e2 100644
--- a/components/browser_sync/profile_sync_service_unittest.cc
+++ b/components/browser_sync/profile_sync_service_unittest.cc
@@ -111,8 +111,6 @@
       const std::string& sync_user_agent,
       const syncer::SyncCredentials& credentials,
       bool delete_sync_data_folder,
-      bool enable_local_sync_backend,
-      const base::FilePath& local_sync_backend_folder,
       std::unique_ptr<syncer::SyncManagerFactory> sync_manager_factory,
       const syncer::WeakHandle<syncer::UnrecoverableErrorHandler>&
           unrecoverable_error_handler,
@@ -138,8 +136,6 @@
       const std::string& sync_user_agent,
       const syncer::SyncCredentials& credentials,
       bool delete_sync_data_folder,
-      bool enable_local_sync_backend,
-      const base::FilePath& local_sync_backend_folder,
       std::unique_ptr<syncer::SyncManagerFactory> sync_manager_factory,
       const syncer::WeakHandle<syncer::UnrecoverableErrorHandler>&
           unrecoverable_error_handler,
@@ -151,7 +147,6 @@
     SyncBackendHostMock::Initialize(
         frontend, std::move(sync_thread), db_thread, file_thread, event_handler,
         service_url, sync_user_agent, credentials, delete_sync_data_folder,
-        enable_local_sync_backend, local_sync_backend_folder,
         std::move(sync_manager_factory), unrecoverable_error_handler,
         report_unrecoverable_error_function, http_post_provider_factory_getter,
         std::move(saved_nigori_state));