chromium/ios/testing/data/http_server_files/console.html

<!DOCTYPE html>
<!--
Copyright 2019 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<!--
This file contains buttons which send log messages to the JavaScript console. It
is embedded as an iframe on console.html.
-->

<html>
<body>

<button id="debug" onclick="console.debug('This is an iframe debug message.')">Debug</button>
<button id="error" onclick="console.error('This is an iframe error message.')">Error</button>
<button id="info" onclick="console.info('This is an iframe informative message.')">Info</button>
<button id="log" onclick="console.log('This iframe log is very round.')">Log</button>
<button id="warn" onclick="console.warn('This is an iframe warning message.')">Warn</button>

</body>
</html>