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chromium/third_party/blink/web_tests/media/remove-from-document-before-load.html 

<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
</script>
<body onload="document.body.innerHTML='PASS: A crash did not occur when the media element was removed before loading.';
    if (window.testRunner)
        testRunner.notifyDone();">
<video src="A"></video>
</body>