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diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/process.js b/tools/addon-sdk-1.4/packages/api-utils/lib/process.js
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+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Jetpack.
+ *
+ * The Initial Developer of the Original Code is Mozilla.
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Irakli Gozalishvili <gozala@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+"use strict";
+
+const { Cc, Ci } = require("chrome");
+const { createRemoteBrowser } = require("api-utils/window-utils");
+const { channel } = require("./channel");
+const { setTimout } = require('./timer');
+const packaging = require('@packaging');
+const { when } = require('./unload');
+
+const addonService = '@mozilla.org/addon/service;1' in Cc ?
+  Cc['@mozilla.org/addon/service;1'].getService(Ci.nsIAddonService) : null
+
+const ENABLE_E10S = packaging.enable_e10s;
+
+function loadScript(target, uri, sync) {
+  return 'loadScript' in target ? target.loadScript(uri, sync)
+                                : target.loadFrameScript(uri, sync)
+}
+
+function process(target, id, path, scope) {
+  // Please note that even though `loadScript`, is executed before channel is
+  // returned, users still are able to subscribe for messages before any message
+  // will be sent. That's because `loadScript` queues script execution on the
+  // other process, which means they will execute async (on the next turn of
+  // event loop), while the channel for messages is returned immediately (in
+  // the same turn of event loop).
+
+  loadScript(target, packaging.uriPrefix + packaging.loader, false);
+  loadScript(target, 'data:,let loader = Loader.new(' +
+                      JSON.stringify(packaging) + ');\n' +
+                     'loader.main("' + id + '", "' + path + '");', false);
+
+  when(function (reason) {
+    // Please note that it's important to unload remote loader
+    // synchronously (using synchronous frame script), to make sure that we
+    // don't stop during unload.
+    loadScript(target, 'data:,loader.unload("' + reason + '")', true);
+  });
+
+  return { channel: channel.bind(null, scope, target) }
+}
+
+exports.spawn = function spawn(id, path) {
+  return function promise(deliver) {
+    // If `nsIAddonService` is available we use it to create an add-on process,
+    // otherwise we fallback to the remote browser's message manager.
+    if (ENABLE_E10S && addonService) {
+      console.log('!!!!!!!!!!!!!!!!!!!! Using addon process !!!!!!!!!!!!!!!!!!');
+      deliver(process(addonService.createAddon(), id, path));
+    } else {
+      createRemoteBrowser(ENABLE_E10S)(function(browser) {
+        let messageManager = browser.QueryInterface(Ci.nsIFrameLoaderOwner).
+                                     frameLoader.messageManager
+        let window = browser.ownerDocument.defaultView;
+        deliver(process(messageManager, id, path, window));
+      });
+    }
+  };
+};