page-with-shared-storage-writable-iframe.html

<html>
<head></head>
<body>
  <p>This page has a shared storage writable iframe.
  <p><iframe src="shared-storage-writable.html" id="test_iframe" onload="console.log('Iframe Loaded');" sharedstoragewritable></iframe>
</body>
</html>

chromium/content/test/data/shared_storage/page-with-shared-storage-writable-iframe.html