frame-default-enc-different-domain.html

<html>
<meta http-equiv="content-type" content="text/html; charset=x-mac-cyrillic">
<title>Frames and encodings</title>
<script>
if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.waitUntilDone();
  window.onload = () => requestAnimationFrame(() => testRunner.notifyDone());
}
</script>

<frameset rows="0,*">
    <frame src="about:" scrolling=no marginwidth=0 marginheight=0>
    <frame src="http://localhost:8000/misc/resources/frame-default-enc-frame.html">
</frameset>

chromium/third_party/blink/web_tests/http/tests/misc/frame-default-enc-different-domain.html