[CrOS Tether] Add tether settings section to the MD settings page.

chrome/browser/resources/settings/settings_ui/settings_ui.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-ui' implements the UI for the Settings page.
  *
  * Example:
  *
@@ skipping 90 matching lines @@
 // <if expr="chromeos">
       controlledSettingShared:
           loadTimeData.getString('controlledSettingShared'),
       controlledSettingOwner: loadTimeData.getString('controlledSettingOwner'),
 // </if>
     };
 
 // <if expr="chromeos">
     CrOncStrings = {
       OncTypeCellular: loadTimeData.getString('OncTypeCellular'),
+      OncTypeTether: loadTimeData.getString('OncTypeTether'),
       OncTypeEthernet: loadTimeData.getString('OncTypeEthernet'),
       OncTypeVPN: loadTimeData.getString('OncTypeVPN'),
       OncTypeWiFi: loadTimeData.getString('OncTypeWiFi'),
       OncTypeWiMAX: loadTimeData.getString('OncTypeWiMAX'),
       networkListItemConnected:
           loadTimeData.getString('networkListItemConnected'),
       networkListItemConnecting:
           loadTimeData.getString('networkListItemConnecting'),
       networkListItemConnectingTo:
           loadTimeData.getString('networkListItemConnectingTo'),
@@ skipping 154 matching lines @@
       this.$.container.removeAttribute('tabindex');
     }.bind(this));
   },
 
   /** @private */
   directionDelegateChanged_: function() {
     this.$.drawer.align = this.directionDelegate.isRtl() ?
         'right' : 'left';
   },
 });