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chromium/chrome/test/data/privacy_budget/calls_user_agent.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>Privacy Budget: Test page that calls User Agent and User Languages.</title>
<script src="test_utils.js"></script>
<script language="javascript">
  navigator.userAgent;
  navigator.language;
  sendValueToTest('Done');
</script>