diff -r 000000000000 -r 6474c204b198 content/base/test/bug578096LoadChromeScript.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/test/bug578096LoadChromeScript.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+var file;
+addMessageListener("file.create", function (message) {
+  file = Components.classes["@mozilla.org/file/directory_service;1"]
+             .getService(Components.interfaces.nsIProperties)
+             .get("TmpD", Components.interfaces.nsIFile);
+  file.append("foo.txt");
+  file.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0600);
+  sendAsyncMessage("file.path", file.path);
+});
+
+addMessageListener("file.remove", function (message) {
+  file.remove(false);
+  sendAsyncMessage("file.removed", {});
+});