diff -r 000000000000 -r 6474c204b198 addon-sdk/source/lib/sdk/notifications.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/lib/sdk/notifications.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,103 @@
+/* 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";
+
+module.metadata = {
+  "stability": "stable"
+};
+
+const { Cc, Ci, Cr } = require("chrome");
+const apiUtils = require("./deprecated/api-utils");
+const errors = require("./deprecated/errors");
+const { isString, isUndefined, instanceOf } = require('./lang/type');
+const { URL } = require('./url');
+
+const NOTIFICATION_DIRECTIONS  = ["auto", "ltr", "rtl"];
+
+try {
+  let alertServ = Cc["@mozilla.org/alerts-service;1"].
+                  getService(Ci.nsIAlertsService);
+
+  // The unit test sets this to a mock notification function.
+  var notify = alertServ.showAlertNotification.bind(alertServ);
+}
+catch (err) {
+  // An exception will be thrown if the platform doesn't provide an alert
+  // service, e.g., if Growl is not installed on OS X.  In that case, use a
+  // mock notification function that just logs to the console.
+  notify = notifyUsingConsole;
+}
+
+exports.notify = function notifications_notify(options) {
+  let valOpts = validateOptions(options);
+  let clickObserver = !valOpts.onClick ? null : {
+    observe: function notificationClickObserved(subject, topic, data) {
+      if (topic === "alertclickcallback")
+        errors.catchAndLog(valOpts.onClick).call(exports, valOpts.data);
+    }
+  };
+  function notifyWithOpts(notifyFn) {
+    notifyFn(valOpts.iconURL, valOpts.title, valOpts.text, !!clickObserver,
+             valOpts.data, clickObserver, valOpts.tag, valOpts.dir, valOpts.lang);
+  }
+  try {
+    notifyWithOpts(notify);
+  }
+  catch (err) {
+    if (err instanceof Ci.nsIException && err.result == Cr.NS_ERROR_FILE_NOT_FOUND) {
+      console.warn("The notification icon named by " + valOpts.iconURL +
+                   " does not exist.  A default icon will be used instead.");
+      delete valOpts.iconURL;
+      notifyWithOpts(notify);
+    }
+    else {
+      notifyWithOpts(notifyUsingConsole);
+    }
+  }
+};
+
+function notifyUsingConsole(iconURL, title, text) {
+  title = title ? "[" + title + "]" : "";
+  text = text || "";
+  let str = [title, text].filter(function (s) s).join(" ");
+  console.log(str);
+}
+
+function validateOptions(options) {
+  return apiUtils.validateOptions(options, {
+    data: {
+      is: ["string", "undefined"]
+    },
+    iconURL: {
+      is: ["string", "undefined", "object"],
+      ok: function(value) {
+        return isUndefined(value) || isString(value) || (value instanceof URL);
+      },
+      msg: "`iconURL` must be a string or an URL instance."
+    },
+    onClick: {
+      is: ["function", "undefined"]
+    },
+    text: {
+      is: ["string", "undefined", "number"]
+    },
+    title: {
+      is: ["string", "undefined", "number"]
+    },
+    tag: {
+      is: ["string", "undefined", "number"]
+    },
+    dir: {
+      is: ["string", "undefined"],
+      ok: function(value) {
+        return isUndefined(value) || ~NOTIFICATION_DIRECTIONS.indexOf(value);
+      },
+      msg: '`dir` option must be one of: "auto", "ltr" or "rtl".'
+    },
+    lang: {
+      is: ["string", "undefined"]
+    }
+  });
+}