[Sync] Consolidate DataTypeController methods that post on the backend thread

chrome/browser/sync/glue/new_non_frontend_data_type_controller.cc

Index: chrome/browser/sync/glue/new_non_frontend_data_type_controller.cc
diff --git a/chrome/browser/sync/glue/new_non_frontend_data_type_controller.cc b/chrome/browser/sync/glue/new_non_frontend_data_type_controller.cc
index 2b0fa16c25cd0fdb14ac798664228c7225e6468a..51a2226c5229b4540ff5b226c6f089ccca4c3e6d 100644
--- a/chrome/browser/sync/glue/new_non_frontend_data_type_controller.cc
+++ b/chrome/browser/sync/glue/new_non_frontend_data_type_controller.cc
@@ -227,6 +227,13 @@ void NewNonFrontendDataTypeController::Stop() {
   set_state(NOT_RUNNING);
 }
 
+void NewNonFrontendDataTypeController::StopLocalServiceAsync() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  PostTaskOnBackendThread(
+      FROM_HERE,
+      base::Bind(&NewNonFrontendDataTypeController::StopLocalService, this));
+}
+
 void NewNonFrontendDataTypeController::StopLocalService() {
   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (local_service_.get())
@@ -235,11 +242,6 @@ void NewNonFrontendDataTypeController::StopLocalService() {
   shared_change_processor_ = NULL;
 }
 
-bool NewNonFrontendDataTypeController::StopAssociationAsync() {
-  NOTIMPLEMENTED();
-  return false;
-}
-
 void NewNonFrontendDataTypeController::CreateSyncComponents() {
   NOTIMPLEMENTED();
 }