icon-blocked.sub.html
<!DOCTYPE html>
<html>
<script>
function createLink(rel, src) {
var link = document.createElement('link');
link.rel = rel;
link.href = src;
document.head.appendChild(link);
}
window.addEventListener('DOMContentLoaded', function() {
createLink('icon', 'http://localhost/foo?q=from_icon'); {}
});
</script>
<p>Use callbacks to show that favicons are not loaded in violation of CSP when link tags are dynamically added to the page.</p>
</html>
