Revert of Remove NPAPI plugin from chromoting webapp.

remoting/webapp/remoting.js

 // Copyright (c) 2012 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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /** @type {remoting.HostSession} */ remoting.hostSession = null;
@@ skipping 161 matching lines @@
  * Returns whether or not IT2Me is supported via the host NPAPI plugin.
  *
  * @return {boolean}
  */
 function isIT2MeSupported_() {
   // Currently, IT2Me on Chromebooks is not supported.
   return !remoting.runningOnChromeOS();
 }
 
 /**
+ * Create an instance of the NPAPI plugin.
+ * @param {Element} container The element to add the plugin to.
+ * @return {remoting.HostPlugin} The new plugin instance or null if it failed to
+ *     load.
+ */
+remoting.createNpapiPlugin = function(container) {
+  var plugin = document.createElement('embed');
+  plugin.type = remoting.settings.PLUGIN_MIMETYPE;
+  // Hiding the plugin means it doesn't load, so make it size zero instead.
+  plugin.width = 0;
+  plugin.height = 0;
+
+  // Verify if the plugin was loaded successfully.
+  if (plugin.hasOwnProperty('REQUESTED_ACCESS_CODE')) {
+    container.appendChild(plugin);
+    return /** @type {remoting.HostPlugin} */ (plugin);
+  }
+
+  return null;
+};
+
+/**
  * Returns true if the current platform is fully supported. It's only used when
  * we detect that host native messaging components are not installed. In that
  * case the result of this function determines if the webapp should show the
  * controls that allow to install and enable Me2Me host.
  *
  * @return {boolean}
  */
 remoting.isMe2MeInstallable = function() {
   /** @type {string} */
   var platform = navigator.platform;
@@ skipping 314 matching lines @@
 /**
  * Generate a nonce, to be used as an xsrf protection token.
  *
  * @return {string} A URL-Safe Base64-encoded 128-bit random value. */
 remoting.generateXsrfToken = function() {
   var random = new Uint8Array(16);
   window.crypto.getRandomValues(random);
   var base64Token = window.btoa(String.fromCharCode.apply(null, random));
   return base64Token.replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '');
 };