page_runs_insecure_content_in_iframe.html

<html>
<head><title>Page that runs insecure content in an iframe</title></head>
<body>
This page contains an iframe which loads contents over an http connection,
causing insecure content (when this page is loaded over https).<br>
<iframe src="https://REPLACE_WITH_HOST_AND_PORT/ssl/iframe_with_insecure_content.html"/>
</body>
</html>

chromium/chrome/test/data/ssl/page_runs_insecure_content_in_iframe.html