[Media Router] Wiring for searching route providers for new sinks.

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';
@@ skipping 13 matching lines @@
 
     container = /** @type {!MediaRouterContainerElement} */
         ($('media-router-container'));
 
     media_router.ui.setElements(container,
         /** @type {!MediaRouterHeaderElement} */
         (container.$['container-header']));
 
     container.addEventListener('acknowledge-first-run-flow',
                                onAcknowledgeFirstRunFlow);
+    container.addEventListener('add-hangout', onAddHangout);
     container.addEventListener('back-click', onNavigateToSinkList);
     container.addEventListener('cast-mode-selected', onCastModeSelected);
     container.addEventListener('close-dialog', onCloseDialog);
     container.addEventListener('close-route-click', onCloseRouteClick);
     container.addEventListener('create-route', onCreateRoute);
     container.addEventListener('issue-action-click', onIssueActionClick);
     container.addEventListener('navigate-sink-list-to-details',
                                onNavigateToDetails);
     container.addEventListener('navigate-to-cast-mode-list',
                                onNavigateToCastMode);
@@ skipping 16 matching lines @@
       if (e.keyCode == media_router.KEYCODE_ESC) {
         container.maybeReportUserFirstAction(
             media_router.MediaRouterUserAction.CLOSE);
       }
     });
 
     window.addEventListener('blur', onWindowBlur);
   }
 
   /**
+   * Requests that the Media Router searches for a sink named
+   * |event.detail.name|.
+   * @param {!Event} event
+   * Parameters in |event|.detail:
+   *   name - Name of the sink to search for.
+   *   selectedCastMode - type of cast mode selected by the user.
+   */
+  function onAddHangout(event) {
+    var detail = event.detail;
+    media_router.browserApi.searchProviders(detail.name,
+                                            detail.selectedCastMode);
+  }
+
+  /**
    * Reports the selected cast mode.
    * Called when the user selects a cast mode from the picker.
    *
    * @param {!Event} event
    * Parameters in |event|.detail:
    *   castModeType - type of cast mode selected by the user.
    */
   function onCastModeSelected(event) {
     /** @type {{castModeType: number}} */
     var detail = event.detail;
@@ skipping 249 matching lines @@
   function onWindowBlur() {
     media_router.browserApi.reportBlur();
   }
 
   return {
     initialize: initialize,
   };
 });
 
 window.addEventListener('load', media_router.initialize);