| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Controlled page</title> |
| <script> |
| // |kThirdPartyServiceWorker| from web_feature.mojom. |
| const kFeature = 3007; |
| |
| window.onmessage = (async e => { |
| if (e.data !== 'from_opener_assert_has_use_counter') { |
| window.top.postMessage('FAIL: unexpected message', '*'); |
| return; |
| } |
| |
| await window.internals.observeUseCounter(document, kFeature); |
| if (window.internals.isUseCounted(document, kFeature)) { |
| window.top.postMessage('from_iframe_verified_has_use_counter', '*'); |
| return; |
| } |
| |
| window.top.postMessage('FAIL: !isUseCounted', '*'); |
| }); |
| </script> |
