Hooking up Android N inline notification replies end-to-end

chrome/test/data/notifications/android_test_worker.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.
 
 var messagePort = null;
 
 addEventListener('message', function(event) {
   messagePort = event.data;
   messagePort.postMessage('ready');
 });
 
 addEventListener('notificationclick', function(event) {
   if (event.notification.data === 'ACTION_CREATE_TAB')
     clients.openWindow('https://chrome.com/');
+  else if (event.notification.data === 'ACTION_REPLY')
+    messagePort.postMessage('reply: ' + event.reply)
 
   event.notification.close();
 });