[Offline Prefetch] Create a new JobScheduler task to wake up for net activity.

chrome/browser/resources/offline_pages/offline_internals.js

 // Copyright 2016 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.
 
 cr.define('offlineInternals', function() {
   'use strict';
 
   /** @type {!Array<OfflinePage>} */
   var offlinePages = [];
 
@@ skipping 274 matching lines @@
                 if (counter == 0) {
                   browserProxy_.getRequestQueue().then(fillRequestQueue);
                 }
               } else {
                 $('save-url-state').textContent +=
                     saveUrls[i] + ' failed to be added to queue.\n';
               }
             });
       }
     };
+    $('schedule-nwake').onclick = function() {
+      browserProxy_.scheduleNwake();
+    }
+    $('cancel-nwake').onclick = function() {
+      browserProxy_.cancelNwake();
+    }
     if (!incognito)
       refreshAll();
   }
 
   // Return an object with all of the exports.
   return {
     initialize: initialize,
   };
 });
 
 document.addEventListener('DOMContentLoaded', offlineInternals.initialize);