MD Settings: Network a11y fixes

chrome/browser/resources/settings/internet_page/internet_known_networks_page.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.
 
 /**
  * @fileoverview
  * 'settings-internet-known-networks' is the settings subpage listing the
  * known networks for a type (currently always WiFi).
  */
 Polymer({
@@ skipping 162 matching lines @@
    * @param {Event} event
    * @private
    */
   fireShowDetails_: function(event) {
     var state =
         /** @type {!{model: !{item: !CrOnc.NetworkStateProperties}}} */ (event)
             .model.item;
     this.fire('show-detail', state);
     event.stopPropagation();
   },
+
+  /**
+   * @param {!CrOnc.NetworkStateProperties}} state
+   * @return {string}
+   * @private
+   */
+  getDetailsA11yString_: function(state) {
+    return CrOnc.getNetworkName(state);
+  },
 });