Need these as well to build.

content/xml/document/resources/XMLPrettyPrint.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+<bindings xmlns="http://www.mozilla.org/xbl"
+          xmlns:html="http://www.w3.org/1999/xhtml">
+ 
+  <binding id="prettyprint">
+
+    <content>
+      We are prettyprinting using bindings!!<children/>
+    </content>
+
+    <implementation>
+      <constructor><![CDATA[
+        alert('prettyprint is cool');
+      ]]></constructor>
+    </implementation>
+
+  </binding>
+</bindings>