Usage of ThreadTaskRunner in lieu of in [chrome/browser/sync],[components/sync_driver]

chrome/browser/sync/glue/frontend_data_type_controller.h

Index: chrome/browser/sync/glue/frontend_data_type_controller.h
diff --git a/chrome/browser/sync/glue/frontend_data_type_controller.h b/chrome/browser/sync/glue/frontend_data_type_controller.h
index 032385986175bd102878f9e13d05b63a9c33e820..2bd713603c8d613d685f44ff0636521c02e983be 100644
--- a/chrome/browser/sync/glue/frontend_data_type_controller.h
+++ b/chrome/browser/sync/glue/frontend_data_type_controller.h
@@ -18,6 +18,7 @@ class ProfileSyncService;
 class ProfileSyncComponentsFactory;
 
 namespace base {
+class SingleThreadTaskRunner;
 class TimeDelta;
 }
 
@@ -45,7 +46,7 @@ namespace browser_sync {
 class FrontendDataTypeController : public sync_driver::DataTypeController {
  public:
   FrontendDataTypeController(
-      scoped_refptr<base::MessageLoopProxy> ui_thread,
+      scoped_refptr<base::SingleThreadTaskRunner> ui_thread,
       const base::Closure& error_callback,
       ProfileSyncComponentsFactory* profile_sync_factory,
       Profile* profile,