chromium/third_party/blink/web_tests/ppapi/plugins/override-node-method.html

<!DOCTYPE html>
<html>
<body>
<embed name="plg" type="application/x-blink-deprecated-test-plugin"></embed>
<p>Test that a plugin can override Node methods of its element. This also means that the plugin
is instantiated when accessing properties and methods of its owner element.</p>
<p>Should alert PASS.</p>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();

    function pluginCallback() { alert("PASS") }

    try {
        plg.normalize();
    } catch (ex) {
        alert("Exception: " + ex.description + ". Test plugin was not found");
    }
</script>
</body>
</html>