After uninstall, remove last item in Launcher folder

chrome/browser/ui/app_list/app_list_syncable_service.h

Index: chrome/browser/ui/app_list/app_list_syncable_service.h
diff --git a/chrome/browser/ui/app_list/app_list_syncable_service.h b/chrome/browser/ui/app_list/app_list_syncable_service.h
index 04ccdcca4a76d574388017d36ee655d4f38a335d..5c8e07877085b571babb4313df01038ff3cd9197 100644
--- a/chrome/browser/ui/app_list/app_list_syncable_service.h
+++ b/chrome/browser/ui/app_list/app_list_syncable_service.h
@@ -71,6 +71,9 @@ class AppListSyncableService : public syncer::SyncableService,
   // Removes sync item matching |id|.
   void RemoveItem(const std::string& id);
 
+  // Removes sync item matching |id| after item uninstall.
+  void RemoveUninstalledItem(const std::string& id);
+
   // Called when properties of an item may have changed, e.g. default/oem state.
   void UpdateItem(AppListItem* app_item);