diff -r 000000000000 -r 6474c204b198 dom/phonenumberutils/PhoneNumberNormalizer.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/phonenumberutils/PhoneNumberNormalizer.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,55 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+// Don't modify this code. Please use:
+// https://github.com/andreasgal/PhoneNumber.js
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["PhoneNumberNormalizer"];
+
+this.PhoneNumberNormalizer = (function() {
+  const UNICODE_DIGITS = /[\uFF10-\uFF19\u0660-\u0669\u06F0-\u06F9]/g;
+  const VALID_ALPHA_PATTERN = /[a-zA-Z]/g;
+  const LEADING_PLUS_CHARS_PATTERN = /^[+\uFF0B]+/g;
+  const NON_DIALABLE_CHARS = /[^,#+\*\d]/g;
+
+  // Map letters to numbers according to the ITU E.161 standard
+  var E161 = {
+    'a': 2, 'b': 2, 'c': 2,
+    'd': 3, 'e': 3, 'f': 3,
+    'g': 4, 'h': 4, 'i': 4,
+    'j': 5, 'k': 5, 'l': 5,
+    'm': 6, 'n': 6, 'o': 6,
+    'p': 7, 'q': 7, 'r': 7, 's': 7,
+    't': 8, 'u': 8, 'v': 8,
+    'w': 9, 'x': 9, 'y': 9, 'z': 9
+  };
+
+  // Normalize a number by converting unicode numbers and symbols to their
+  // ASCII equivalents and removing all non-dialable characters.
+  function NormalizeNumber(number, numbersOnly) {
+    if (typeof number !== 'string') {
+      return '';
+    }
+
+    number = number.replace(UNICODE_DIGITS,
+                            function (ch) {
+                              return String.fromCharCode(48 + (ch.charCodeAt(0) & 0xf));
+                            });
+    if (!numbersOnly) {
+      number = number.replace(VALID_ALPHA_PATTERN,
+                              function (ch) {
+                                return String(E161[ch.toLowerCase()] || 0);
+                              });
+    }
+    number = number.replace(LEADING_PLUS_CHARS_PATTERN, "+");
+    number = number.replace(NON_DIALABLE_CHARS, "");
+    return number;
+  };
+
+
+  return {
+    Normalize: NormalizeNumber
+  };
+})();
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