chromium/chrome/browser/resources/identity_internals/identity_internals.html

<!doctype html>
<html dir="ltr" lang="en">
<head>
  <meta charset="utf-8">
  <title>Identity API Token Cache</title>
  <link rel="stylesheet" href="chrome://resources/css/text_defaults.css">
  <link rel="stylesheet" href="identity_internals.css">
</head>
<body>
  <h2 class="header">Identity API Token Cache</h2>
  <div id="token-list"></div>
  <script type="module" src="identity_internals.js"></script>
</body>
</html>