shared_storage_first_party_data.html

<html>
  <head>
    <title>shared storage first party data</title>
    <script>
      async function setSharedStorage() {
        try {
          await window.sharedStorage.set('age-group', 1);
        } catch {
          console.error('Failed to add shared storage entry.');
        }
      }
      </script>
  </head>
<body onload="setSharedStorage();">
</body></html>

chromium/chrome/test/data/shared_storage_first_party_data.html