Codebase Browser
chromium
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chromium/chrome/browser/resources/chromeos/sensor_info/sensor_info.html 

<!DOCTYPE HTML>
<html>
  <meta charset="utf-8">
  <link rel="stylesheet" href="sensor_info.css">
  <sensor-info-app></sensor-info-app>
  <script type="module" src="app.js"></script>
</html>