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diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/utils/data.js b/tools/addon-sdk-1.4/packages/api-utils/lib/utils/data.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
+ * the Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Irakli Gozalishvili <gozala@mozilla.com> (Original Author)
+ *
+ * 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, Cu } = require("chrome");
+const IOService = Cc["@mozilla.org/network/io-service;1"].
+  getService(Ci.nsIIOService);
+const AppShellService = Cc["@mozilla.org/appshell/appShellService;1"].
+  getService(Ci.nsIAppShellService);
+
+const { NetUtil } = Cu.import("resource://gre/modules/NetUtil.jsm");
+const FaviconService = Cc["@mozilla.org/browser/favicon-service;1"].
+                          getService(Ci.nsIFaviconService);
+
+const PNG_B64 = "data:image/png;base64,";
+const DEF_FAVICON_URI = "chrome://mozapps/skin/places/defaultFavicon.png";
+let   DEF_FAVICON = null;
+
+/**
+ * Takes URI of the page and returns associated favicon URI.
+ * If page under passed uri has no favicon then base64 encoded data URI of
+ * default faveicon is returned.
+ * @param {String} uri
+ * @returns {String}
+ */
+exports.getFaviconURIForLocation = function getFaviconURIForLocation(uri) {
+  let pageURI = NetUtil.newURI(uri);
+  try {
+    return FaviconService.getFaviconDataAsDataURL(
+                  FaviconService.getFaviconForPage(pageURI));
+  }
+  catch(e) {
+    if (!DEF_FAVICON) {
+      DEF_FAVICON = PNG_B64 +
+                    base64Encode(getChromeURIContent(DEF_FAVICON_URI));
+    }
+    return DEF_FAVICON;
+  }
+}
+
+/**
+ * Takes chrome URI and returns content under that URI.
+ * @param {String} chromeURI
+ * @returns {String}
+ */
+function getChromeURIContent(chromeURI) {
+  let channel = IOService.newChannel(chromeURI, null, null);
+  let input = channel.open();
+  let stream = Cc["@mozilla.org/binaryinputstream;1"].
+                createInstance(Ci.nsIBinaryInputStream); 
+  stream.setInputStream(input);
+  let content = stream.readBytes(input.available());
+  stream.close();
+  input.close();
+  return content;
+}
+exports.getChromeURIContent = getChromeURIContent;
+
+/**
+ * Creates a base-64 encoded ASCII string from a string of binary data.
+ */
+function base64Encode(data) AppShellService.hiddenDOMWindow.btoa(String(data));
+exports.base64Encode = base64Encode;
+
+/**
+ * Decodes a string of data which has been encoded using base-64 encoding.
+ */
+function base64Decode(data) AppShellService.hiddenDOMWindow.atob(String(data));
+exports.base64Decode = base64Decode;