chromium/third_party/blink/web_tests/fast/dom/resources/wrapper-context-inner.html

<html>
<body onload="notifyLoaded()">
<script>
function notifyLoaded() {
  top.innerHasLoaded();
}

// After the top frame has accessed the document of this frame, we
// test that the document wrapper was created in this context and
// not in the top context.
function runTest() {
     var paragraph = document.createElement('p');
     if (HTMLElement.prototype.isPrototypeOf(paragraph)) {
         top.writeOutput("PASS");
     } else {
         top.writeOutput("FAIL");
     }
     if (window.testRunner) {
         testRunner.notifyDone();
     }
}
</script>
</body>
</html>