1 files changed, 8 insertions, 0 deletions
diff --git a/dom/base/test/chrome/registerElement_ep.js b/dom/base/test/chrome/registerElement_ep.js
new file mode 100644
index 000000000..de32ba51c
--- /dev/null
+++ b/dom/base/test/chrome/registerElement_ep.js
@@ -0,0 +1,8 @@
+var proto = Object.create(HTMLElement.prototype);
+proto.magicNumber = 42;
+proto.createdCallback = function() {
+  finishTest(this.magicNumber === 42);
+};
+document.registerElement("x-foo", { prototype: proto });
+
+document.createElement("x-foo");