escape.diff

diff --git a/dom/base/test/test_bug518104.html b/dom/base/test/test_bug518104.html
index d60d2ac9f85c..df255cfe86e3 100644
--- a/dom/base/test/test_bug518104.html
+++ b/dom/base/test/test_bug518104.html
@@ -21,17 +21,17 @@ function done() {
   var iframe = document.getElementById("iframe");
   var divs = iframe.contentWindow.document.getElementsByTagName("p").length;
   is(divs, 0, "<p> got written.")
   SimpleTest.finish();
 }
 
 </script>
 <div id="content" style="display: none">
-  <iframe id='iframe' src="data:text/html,
+  <iframe id='iframe' srcdoc="
     <div></div><div></div>
-    <script defer src='data:application/javascript,document.write(%2522<p></p>%2522);parent.done();document.close();'></script>">
+    <script defer src='data:application/javascript,document.write(\'<p></p>\');parent.done();document.close();'></script>">
   </iframe>
 </div>
 <pre id="test">
 </pre>
 </body>
 </html>