Add user customizable launch type for apps.

chrome/browser/resources/shared/js/cr/ui/command.js

 // Copyright (c) 2010 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.
 
 /**
  * @fileoverview A command is an abstraction of an action a user can do in the
  * UI.
  *
  * When the focus changes in the document for each command a canExecute event
  * is dispatched on the active element. By listening to this event you can
@@ skipping 154 matching lines @@
    */
   cr.defineProperty(Command, 'disabled', cr.PropertyKind.BOOL_ATTR);
 
   /**
    * Whether the command is hidden or not.
    * @type {boolean}
    */
   cr.defineProperty(Command, 'hidden', cr.PropertyKind.BOOL_ATTR);
 
   /**
+   * Whether the command is checked or not.
+   * @type {boolean}
+   */
+  cr.defineProperty(Command, 'checked', cr.PropertyKind.BOOL_ATTR);
+
+  /**
    * Dispatches a canExecute event on the target.
    * @param {cr.ui.Command} command The command that we are testing for.
    * @param {Element} target The target element to dispatch the event on.
    */
   function dispatchCanExecuteEvent(command, target) {
     var e = new CanExecuteEvent(command, true)
     target.dispatchEvent(e);
     command.disabled = !e.canExecute;
   }
 
@@ skipping 101 matching lines @@
       this.stopPropagation();
     }
   };
 
   // Export
   return {
     Command: Command,
     CanExecuteEvent: CanExecuteEvent
   };
 });