chromium/third_party/blink/web_tests/fast/frames/frame-scrolling-attribute.html

<!-- This page tests the behavior of the "scrolling" attribute on <frame>
elements which contain a page large enough to need to be scrolled. -->
<frameset cols="200,200,200,200" rows="200,200,200,200">
    <frame src="resources/big-page.html">
    <frame src="resources/big-page.html" scrolling>
    <frame src="resources/big-page.html" scrolling="">
    <frame src="resources/big-page.html" scrolling="auto">
    <frame src="resources/big-page.html" scrolling="yes">
    <frame src="resources/big-page.html" scrolling="no">
    <frame src="resources/big-page.html" scrolling="bogus">
    <frame src="resources/big-page.html" scrolling="1234">
</frameset>