1 files changed, 9 insertions, 2 deletions
diff --git a/layout/reftests/webcomponents/update-dist-node-descendants-1.html b/layout/reftests/webcomponents/update-dist-node-descendants-1.html
index 003c23394..3ba96594b 100644
--- a/layout/reftests/webcomponents/update-dist-node-descendants-1.html
+++ b/layout/reftests/webcomponents/update-dist-node-descendants-1.html
@@ -6,8 +6,10 @@
 <div id="outer"><span id="distnode">text</span></div>
 <script>
 
-  var shadowRoot = document.getElementById('outer').attachShadow({mode: 'open'});
-  shadowRoot.innerHTML = '<div><slot></slot></div>';
+function run() {
+  var shadowRoot = document.getElementById('outer').createShadowRoot();
+  shadowRoot.innerHTML = '<div><content></content></div>';
+}
 
   function tweak() {
     var distNode = document.getElementById("distnode");
@@ -16,7 +18,12 @@
     document.documentElement.removeAttribute("class");
 	}
 
+if (document.body.createShadowRoot) {
+  run();
   window.addEventListener("MozReftestInvalidate", tweak);
+} else {
+  document.documentElement.className = "";
+}
 </script>
 </body>
 </html>