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chromium/third_party/blink/web_tests/fast/events/resources/big-page-with-overflow-hidden.html 

<html>
    <body style="overflow: hidden">
        <div style="width: 1000px; height: 1000px; background-color: blue">
           <span id='textInFrame'> Try to autoscroll this text.<br>
   this page is a 1000px by 1000px page with the CSS overflow hidden attribute setted </span>
<br><br><br><br>
PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED   PASSED  
        </div>
    </body>
</html>