page_with_frame_csp.html | Explore in Territory

<!DOCTYPE html>
<html>
<title>page with frame csp</title>
<script>
function addIframe() {
  const frame = document.createElement('iframe');
  frame.name = 'added-by-page';
  frame.src = `http://cross-origin.com:${location.port}` +
      '/extensions/csp/success.html';
  return new Promise(resolve => {
    frame.onload = () => { resolve(true); };
    document.body.appendChild(frame);
  });
}
</script>
</html>

chromium/chrome/test/data/extensions/csp/page_with_frame_csp.html