arc: Fix crash on deferred app launch.

chrome/browser/ui/ash/launcher/launcher_item_controller.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_ITEM_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_ITEM_CONTROLLER_H_
 
 #include <string>
 
 #include "ash/common/shelf/shelf_item_types.h"
@@ skipping 38 matching lines @@
   void set_image_set_by_controller(bool image_set_by_controller) {
     image_set_by_controller_ = image_set_by_controller;
   }
 
   // Returns items for the application menu; used for convenience and testing.
   virtual MenuItemList GetAppMenuItems(int event_flags);
 
   // Returns nullptr if class is not AppWindowLauncherItemController.
   virtual AppWindowLauncherItemController* AsAppWindowLauncherItemController();
 
+  // Returns true if controller represents a shortcut.
+  virtual bool IsShortcut() const;
+
  private:
   // The application id; empty if there is no app associated with the item.
   const std::string app_id_;
 
   // An id that can be passed to an app when launched in order to support
   // multiple shelf items per app. This id is used together with the app_id to
   // uniquely identify each shelf item that has the same app_id.
   const std::string launch_id_;
 
   // A unique id assigned by the shelf model for the shelf item.
   ash::ShelfID shelf_id_;
 
   ChromeLauncherController* launcher_controller_;
 
   // The lock counter which tells the launcher if the item can be removed from
   // the launcher (0) or not (>0). It is being used for windowed V1
   // applications.
   int locked_;
 
   // Set to true if the launcher item image has been set by the controller.
   bool image_set_by_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherItemController);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_ITEM_CONTROLLER_H_