MD Settings: Fix internet focus and styling

chrome/browser/resources/settings/internet_page/network_summary_item.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 Polymer element for displaying the network state for a specific
  * type and a list of networks for that type.
  */
 
 /** @typedef {chrome.networkingPrivate.DeviceStateProperties} */
@@ skipping 172 matching lines @@
   /**
    * @return {boolean}
    * @private
    */
   enableIsVisible_: function() {
     return this.deviceState.Type != CrOnc.Type.ETHERNET &&
         this.deviceState.Type != CrOnc.Type.VPN;
   },
 
   /**
-   * @return {boolean}
-   * @private
-   */
-  showDetailsIsVisible_: function() {
-    return this.deviceState.Type == CrOnc.Type.CELLULAR &&
-        this.networkStateList.length == 1;
-  },
-
-  /**
    * @return {boolean} Whether or not to show the UI to expand the list.
    * @private
    */
   expandIsVisible_: function() {
     if (!this.deviceIsEnabled_())
       return false;
     let type = this.deviceState.Type;
     var minLength =
         (type == CrOnc.Type.WI_FI || type == CrOnc.Type.VPN) ? 1 : 2;
     return this.networkStateList.length >= minLength;
@@ skipping 53 matching lines @@
    * @private
    */
   onDeviceEnabledTap_: function(event) {
     var deviceIsEnabled = this.deviceIsEnabled_();
     var type = this.deviceState ? this.deviceState.Type : '';
     this.fire(
         'device-enabled-toggled', {enabled: !deviceIsEnabled, type: type});
     // Make sure this does not propagate to onDetailsTap_.
     event.stopPropagation();
   },
-
-  /**
-   * @return {string}
-   * @private
-   */
-  getTabIndex_: function() {
-    return this.deviceIsEnabled_() ? '0' : '-1';
-  },
 });