diff -r 000000000000 -r 6474c204b198 dom/workers/test/subdir/relativeLoad_sub_worker.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/workers/test/subdir/relativeLoad_sub_worker.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+const importSubURL = "relativeLoad_sub_import.js";
+
+onmessage = function(event) {
+  var xhr = new XMLHttpRequest();
+  xhr.open("GET", "testXHR.txt", false);
+  xhr.send(null);
+  if (xhr.status != 404) {
+    throw "Loaded an xhr from the wrong location!";
+  }
+
+  importScripts(importSubURL);
+  var worker = new Worker("relativeLoad_sub_worker2.js");
+  worker.onerror = function(event) {
+    throw event.data;
+  };
+  worker.onmessage = function(event) {
+    if (event.data != workerSubURL) {
+      throw "Bad data!";
+    }
+    postMessage(workerSubURL);
+  };
+};