NTP: Adds a context menu to the apps section...

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 264 matching lines @@
     /**
      * Whether the target can execute the command. Setting this also stops the
      * propagation.
      * @type {boolean}
      */
     canExecute_: false,
     get canExecute() {
       return this.canExecute_;
     },
     set canExecute(canExecute) {
-      this.canExecute_ = canExecute;
+      this.canExecute_ = !!canExecute;
       this.stopPropagation();
     }
   };
 
   // Export
   return {
     Command: Command,
     CanExecuteEvent: CanExecuteEvent
   };
 });