chromium/third_party/blink/web_tests/fast/loader/submit-form-while-parsing-2.html

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var testIsStarted = false;

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        testRunner.waitUntilDone();
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        document.getElementById("message").firstChild.data = "FAILED: Subframe had the wrong location";
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<body onload="startTest()">
<p id="message">TEST DID NOT RUN YET</p>
<iframe src="resources/submit-form-while-parsing-subframe.html" id="frame" onload="frameLoaded()"></iframe>
</body>