iframe-script-modify-attr-expected.html

<!DOCTYPE html>
<iframe id="ifr" scrolling="no" marginwidth="50" marginheight="100"
  style="width:200px;height:200px;"
  src="http://localhost:8000/misc/resources/iframe-big.html">
</iframe>

chromium/third_party/blink/web_tests/http/tests/misc/iframe-script-modify-attr-expected.html