chromium/third_party/blink/web_tests/plugins/object-onerror-placeholder.html

<html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<body>
<object type="image/test" data="hello" id="object1" onerror="errorHandler()">
</object>
<script>
var testobject = async_test("crbug.com/445557:error events aren't dispatched" +
    " for <object> elements");
function errorHandler() {
  testobject.done();
};
</script>
</body>
</html>