mash: Cleanup ash shelf application menu code.

chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.cc

Index: chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.cc b/chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.cc
index ff8294809dbbfcc482c1fc06d4dd259db1bbc6a8..6b68803ded7bd64fa696c7ed3d9bae0c6daf4500 100644
--- a/chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.cc
+++ b/chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.cc
@@ -37,9 +37,9 @@ ArcAppDeferredLauncherItemController::ItemSelected(const ui::Event& event) {
   return ash::ShelfItemDelegate::kNoAction;
 }
 
-ui::SimpleMenuModel*
-ArcAppDeferredLauncherItemController::CreateApplicationMenu(int event_flags) {
-  return nullptr;
+ash::ShelfApplicationMenuItems
+ArcAppDeferredLauncherItemController::GetAppMenuItems(int event_flags) {
+  return ash::ShelfApplicationMenuItems();
 }
 
 void ArcAppDeferredLauncherItemController::Close() {
@@ -54,8 +54,3 @@ ash::ShelfItemDelegate::PerformedAction
 ArcAppDeferredLauncherItemController::Activate(ash::LaunchSource source) {
   return ash::ShelfItemDelegate::kNoAction;
 }
-
-ChromeLauncherAppMenuItems
-ArcAppDeferredLauncherItemController::GetApplicationList(int event_flags) {
-  return ChromeLauncherAppMenuItems();
-}