chromium/third_party/blink/web_tests/external/wpt/service-workers/service-worker/resources/object-is-not-intercepted-iframe.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>iframe for embed-and-object-are-not-intercepted test</title>
<body>
<script>
// The OBJECT element will call this with the result about whether the OBJECT
// request was intercepted by the service worker.
var report_result;

// Our parent (the root frame of the test) will examine this to get the result.
var test_promise = new Promise(resolve => {
    report_result = resolve;
  });
</script>

<object data="embedded-content-from-server.html"></object>
</body>