diff -r 000000000000 -r 6474c204b198 dom/indexedDB/test/bug839193.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/indexedDB/test/bug839193.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* 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/. */
+
+const nsIQuotaManager = Components.interfaces.nsIQuotaManager;
+
+let gURI = Components.classes["@mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService).newURI("http://localhost", null, null);
+
+function onUsageCallback(uri, usage, fileUsage) {}
+
+function onLoad()
+{
+  var quotaManager = Components.classes["@mozilla.org/dom/quota/manager;1"]
+                               .getService(nsIQuotaManager);
+  var quotaRequest = quotaManager.getUsageForURI(gURI, onUsageCallback);
+  quotaRequest.cancel();
+  Components.classes["@mozilla.org/observer-service;1"]
+            .getService(Components.interfaces.nsIObserverService)
+            .notifyObservers(window, "bug839193-loaded", null);
+}
+
+function onUnload()
+{
+  Components.classes["@mozilla.org/observer-service;1"]
+            .getService(Components.interfaces.nsIObserverService)
+            .notifyObservers(window, "bug839193-unloaded", null);
+}