diff -r 000000000000 -r 6474c204b198 dom/indexedDB/test/chromeHelpers.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/indexedDB/test/chromeHelpers.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const { 'classes': Cc, 'interfaces': Ci, 'utils': Cu } = Components;
+
+let testGenerator = testSteps();
+
+if (!window.runTest) {
+  window.runTest = function()
+  {
+    Cu.importGlobalProperties(["indexedDB"]);
+
+    SimpleTest.waitForExplicitFinish();
+
+    testGenerator.next();
+  }
+}
+
+function finishTest()
+{
+  SimpleTest.executeSoon(function() {
+    testGenerator.close();
+    SimpleTest.finish();
+  });
+}
+
+function grabEventAndContinueHandler(event)
+{
+  testGenerator.send(event);
+}
+
+function continueToNextStep()
+{
+  SimpleTest.executeSoon(function() {
+    testGenerator.next();
+  });
+}
+
+function errorHandler(event)
+{
+  throw new Error("indexedDB error, code " + event.target.error.name);
+}