mash: Cleanup ash shelf application menu code.

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_item_controller.h"
 
 #include <memory>
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 19 matching lines @@
 
 base::TimeDelta ArcAppDeferredLauncherItemController::GetActiveTime() const {
   return base::Time::Now() - start_time_;
 }
 
 ash::ShelfItemDelegate::PerformedAction
 ArcAppDeferredLauncherItemController::ItemSelected(const ui::Event& event) {
   return ash::ShelfItemDelegate::kNoAction;
 }
 
-ui::SimpleMenuModel*
-ArcAppDeferredLauncherItemController::CreateApplicationMenu(int event_flags) {
-  return nullptr;
+ash::ShelfAppMenuItemList ArcAppDeferredLauncherItemController::GetAppMenuItems(
+    int event_flags) {
+  return ash::ShelfAppMenuItemList();
 }
 
 void ArcAppDeferredLauncherItemController::Close() {
   if (host_)
     host_->Close(app_id());
 }
 
 void ArcAppDeferredLauncherItemController::Launch(ash::LaunchSource source,
                                                   int event_flags) {}
 
 ash::ShelfItemDelegate::PerformedAction
 ArcAppDeferredLauncherItemController::Activate(ash::LaunchSource source) {
   return ash::ShelfItemDelegate::kNoAction;
 }
-
-ChromeLauncherAppMenuItems
-ArcAppDeferredLauncherItemController::GetApplicationList(int event_flags) {
-  return ChromeLauncherAppMenuItems();
-}