[Media Router] Auto-close Media Router dialog after starting or stopping a session.

chrome/browser/resources/media_router/media_router.js

 // Copyright 2015 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 src="media_router_data.js">
 <include src="media_router_ui_interface.js">
 
 // Handles user events for the Media Router UI.
 cr.define('media_router', function() {
   'use strict';
 
   // The media-router-container element. Initialized after polymer is ready.
   var container = null;
 
   /**
    * Initializes the Media Router WebUI and requests initial media
    * router content, such as the media sink and media route lists.
    */
   function initialize() {
     media_router.browserApi.requestInitialData();
 
     container = $('media-router-container');
     media_router.ui.setContainer(container);
 
-    container.addEventListener('close-button-click', onCloseDialogClick);
+    container.addEventListener('close-button-click', onCloseDialogEvent);
+    container.addEventListener('close-dialog', onCloseDialogEvent);
     container.addEventListener('close-route-click', onCloseRouteClick);
     container.addEventListener('create-route', onCreateRoute);
     container.addEventListener('issue-action-click', onIssueActionClick);
   }
 
   /**
    * Closes the dialog.
    * Called when the user clicks the close button on the dialog.
    */
-  function onCloseDialogClick() {
+  function onCloseDialogEvent() {
     media_router.browserApi.closeDialog();
   }
 
   /**
    * Acts on an issue and dismisses it from the UI.
    * Called when the user performs an action on an issue.
    *
    * @param {{detail: {id: string, actionType: number, helpPageId: number}}}
    *     data
    * Parameters in |data|.detail:
@@ skipping 33 matching lines @@
   function onCloseRouteClick(data) {
     media_router.browserApi.closeRoute(data.detail.route);
   }
 
   return {
     initialize: initialize,
   };
 });
 
 window.addEventListener('load', media_router.initialize);