Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/http/tests/html/validation-bubble-oopif-clip.html 

<!DOCTYPE html>
<body>
<p>Origin: http://127.0.0.1:8000/</p>
<iframe width=500 src="https://127.0.0.1:8443/html/resources/validation-bubble-oopif-frame-2.html"></iframe>
<p>A validation bubble should not be cut off by the iframe.
</body>