diff -r 000000000000 -r 6474c204b198 layout/reftests/xul-document-load/test006-007.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/reftests/xul-document-load/test006-007.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/  */
+
+function checkDOM(target, data) {
+  // assuming whitespace and the XML declaration are not in the DOM.
+  var piNode = document.firstChild;
+  if (!piNode || piNode.nodeType != Node.PROCESSING_INSTRUCTION_NODE ||
+      piNode.target != target || piNode.data != data) {
+    document.documentElement.style.backgroundColor = "red";
+  }
+}