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    if (window.testRunner)
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<p>When balancing the last row (fragmentainer group), be sure to skip past things that don't occur
    in that row, such as pagination struts in preceding rows.</p>
<p>PASS if no crash or assertion failure.</p>
<div style="-webkit-column-count:2; line-height:30px; height:30px; column-fill:auto;">
    <div style="-webkit-column-count:2;">
        <div style="height:20px;"></div>
        <div> <!-- Has a pagination strut in the first column of the first row. Border box top
                   pushed to the top of the second column of the first row. Ends in the first column
                   of the second row. -->
            <br> <!-- In the second column of the first row. -->
            <br> <!-- In the first column of the second row. -->
        </div>
    </div>
</div>