Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/http/tests/workers/shared-worker-in-iframe.html 

<body>
<p>Test simultaneous shared worker construction case (document + iframe).</p>
<p>Prints "DONE" if the test is successful</p>
<div id=result></div>
<script>
function log(message)
{
    document.getElementById("result").innerHTML += message + "<br>";
}

if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

var worker = new SharedWorker('resources/shared-worker-count-connections.js');
worker.port.onmessage = function(event) {
  if (event.data == 2) {
    done();
  }
};

function done()
{
    log("DONE");
    if (window.testRunner)
        testRunner.notifyDone();
}
</script>
<iframe src='resources/shared-worker-iframe.html'></iframe>
</body>