feature-policy/resources/feature-policy-nested-subframe-policy.https.sub.html

<!DOCTYPE html>
<body>
<script>
'use strict';
const same_origin_src = '/feature-policy/resources/feature-policy-allowedfeatures.html';
const cross_origin_src = 'https://{{domains[www1]}}:{{ports[https][0]}}' + same_origin_src;
const subframe_header_policy = '?pipe=header(Feature-Policy, fullscreen ';
const policy_all = '*';
const policy_self = '\'self\'';
const policy_none = '\'none\'';

// Messages gathered from subframes. When all subframe messages are gathered,
// it will be send back to top level frame.
const subframe_messages = [];

let local_frame_all = document.createElement('iframe');
let local_frame_self = document.createElement('iframe');
let local_frame_none = document.createElement('iframe');
local_frame_all.src = same_origin_src + subframe_header_policy + policy_all + ';)';
local_frame_self.src = same_origin_src + subframe_header_policy + policy_self + ';)';
local_frame_none.src = same_origin_src + subframe_header_policy + policy_none + ';)';

let remote_frame_all = document.createElement('iframe');
let remote_frame_self = document.createElement('iframe');
let remote_frame_none = document.createElement('iframe');
remote_frame_all.src = cross_origin_src + subframe_header_policy + policy_all + ';)';
remote_frame_self.src = cross_origin_src + subframe_header_policy + policy_self + ';)';
remote_frame_none.src = cross_origin_src + subframe_header_policy + policy_none + ';)';

window.addEventListener('message', function(evt) {
  if (evt.source === local_frame_all.contentWindow) {
    subframe_messages.push({frame: 'local', policy: policy_all, allowedfeatures: evt.data});
  } else if (evt.source === local_frame_self.contentWindow) {
    subframe_messages.push({frame: 'local', policy: policy_self, allowedfeatures: evt.data});
  } else if (evt.source === local_frame_none.contentWindow) {
    subframe_messages.push({frame: 'local', policy: policy_none, allowedfeatures: evt.data});
  } else if (evt.source === remote_frame_all.contentWindow) {
    subframe_messages.push({frame: 'remote', policy: policy_all, allowedfeatures: evt.data});
  } else if (evt.source === remote_frame_self.contentWindow) {
    subframe_messages.push({frame: 'remote', policy: policy_self, allowedfeatures: evt.data});
  } else if (evt.source === remote_frame_none.contentWindow) {
    subframe_messages.push({frame: 'remote', policy: policy_none, allowedfeatures: evt.data});
  }

  if (subframe_messages.length == 6)
    parent.postMessage(subframe_messages, '*');
});

document.body.appendChild(local_frame_all);
document.body.appendChild(local_frame_self);
document.body.appendChild(local_frame_none);
document.body.appendChild(remote_frame_all);
document.body.appendChild(remote_frame_self);
document.body.appendChild(remote_frame_none);
</script>
</body>