diff -r 000000000000 -r 6474c204b198 dom/phonenumberutils/PhoneNumberService.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/phonenumberutils/PhoneNumberService.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,99 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const DEBUG = false;
+function debug(s) { dump("-*- PhoneNumberService.js: " + s + "\n"); }
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/DOMRequestHelper.jsm");
+Cu.import("resource://gre/modules/PhoneNumberUtils.jsm");
+Cu.import("resource://gre/modules/PhoneNumberNormalizer.jsm");
+
+XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
+                                   "@mozilla.org/childprocessmessagemanager;1",
+                                   "nsIMessageSender");
+
+// PhoneNumberService
+
+function PhoneNumberService()
+{
+  if (DEBUG) debug("Constructor");
+}
+
+PhoneNumberService.prototype = {
+  __proto__: DOMRequestIpcHelper.prototype,
+
+  receiveMessage: function(aMessage) {
+    if (DEBUG) debug("receiveMessage: " + aMessage.name);
+    let msg = aMessage.json;
+
+    let req = this.getRequest(msg.requestID);
+    if (!req) {
+      return;
+    }
+
+    switch (aMessage.name) {
+      case "PhoneNumberService:FuzzyMatch:Return:KO":
+        Services.DOMRequest.fireError(req.request, msg.errorMsg);
+        break;
+      case "PhoneNumberService:FuzzyMatch:Return:OK":
+        Services.DOMRequest.fireSuccess(req.request, msg.result);
+        break;
+      default:
+        if (DEBUG) debug("Wrong message: " + aMessage.name);
+    }
+    this.removeRequest(msg.requestID);
+  },
+
+  fuzzyMatch: function(aNumber1, aNumber2) {
+    if (DEBUG) debug("fuzzyMatch: " + aNumber1 + ", " + aNumber2);
+    let request = this.createRequest();
+
+    if ((aNumber1 && !aNumber2) || (aNumber2 && !aNumber1)) {
+      // if only one of the numbers is empty/null/undefined and the other
+      // number is not, we can fire false result in next tick
+      Services.DOMRequest.fireSuccessAsync(request, false);
+    } else if ((aNumber1 === aNumber2) ||
+        (PhoneNumberNormalizer.Normalize(aNumber1) === PhoneNumberNormalizer.Normalize(aNumber2))) {
+      // if we have a simple match fire successful request in next tick
+      Services.DOMRequest.fireSuccessAsync(request, true);
+    } else {
+      // invoke fuzzy matching in the parent
+      let options = { number1: aNumber1, number2: aNumber2 };
+      cpmm.sendAsyncMessage("PhoneNumberService:FuzzyMatch",
+                           {requestID: this.getRequestId({request: request}),
+                            options: options});
+    }
+
+    return request;
+  },
+
+  normalize: function(aNumber) {
+    if (DEBUG) debug("normalize: " + aNumber);
+    return PhoneNumberNormalizer.Normalize(aNumber);
+  },
+
+  init: function(aWindow) {
+    if (DEBUG) debug("init call");
+    this.initDOMRequestHelper(aWindow, [
+      "PhoneNumberService:FuzzyMatch:Return:OK",
+      "PhoneNumberService:FuzzyMatch:Return:KO"
+    ]);
+  },
+
+  classID : Components.ID("{e2768710-eb17-11e2-91e2-0800200c9a66}"),
+  contractID : "@mozilla.org/phoneNumberService;1",
+  QueryInterface : XPCOMUtils.generateQI([Ci.nsIDOMGlobalPropertyInitializer,
+                                          Ci.nsISupportsWeakReference,
+                                          Ci.nsIObserver]),
+}
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PhoneNumberService]);