Codebase Browser
chromium
Go to App

chromium/chrome/test/data/iframe_cross_site.html 

<html><head><title>cross-site iframe test</title></head>
<body>
<!-- This only works if the CrossSiteRedirector is running on the embedded test
     server, and the host_resolver is set up to handle b.com. -->
<iframe src="/cross-site/b.com/title1.html" id="frame1"></iframe>
<iframe src="/cross-site/c.com/title1.html" id="frame2"></iframe>
</body></html>