[Media Router] Add a supports_web_ui_controller attribute to MediaRoute

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_browser_api.js">
 // <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.
-   * @type {?MediaRouterContainerElement}
+   * @type {?MediaRouterContainerInterface}
    */
   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() {
     // For non-Mac platforms, request data immediately after initialization.
     if (!cr.isMac)
       onRequestInitialData();
 
-    container = /** @type {!MediaRouterContainerElement} */
+    container = /** @type {!MediaRouterContainerInterface} */
         ($('media-router-container'));
 
-    media_router.ui.setElements(container,
-        /** @type {!MediaRouterHeaderElement} */(container.header));
+    media_router.ui.setElements(container, container.header);
 
     container.addEventListener('acknowledge-first-run-flow',
                                onAcknowledgeFirstRunFlow);
     container.addEventListener('back-click', onNavigateToSinkList);
     container.addEventListener('cast-mode-selected', onCastModeSelected);
     container.addEventListener('change-route-source-click',
                                onChangeRouteSourceClick);
     container.addEventListener('close-dialog', onCloseDialog);
     container.addEventListener('close-route', onCloseRoute);
     container.addEventListener('create-route', onCreateRoute);
@@ skipping 249 matching lines @@
   }
 
   /**
    * Reports whether or not the route creation was successful.
    *
    * @param {!Event} event
    * Parameters in |event|.detail:
    *   success - whether or not the route creation was successful.
    */
   function onReportRouteCreation(event) {
+    /** @type {{success: boolean}} */
     var detail = event.detail;
     media_router.browserApi.reportRouteCreation(detail.success);
   }
 
   /**
    * Reports success or the type of failure for route creation response.
    * Called when the route is resolved; either the route creation was a success
    * or if there was no route or the route's corresponding sink is invalid;
    * either the sink does not exist or was not the sink we were looking for.
    *
@@ skipping 77 matching lines @@
   function onWindowBlur() {
     media_router.browserApi.reportBlur();
   }
 
   return {
     initialize: initialize,
   };
 });
 
 window.addEventListener('load', media_router.initialize);