LayoutTests/fast/ruby/breaking-opportunity-between-bases.html

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<!-- There's a breaking opportunity between み and ず -->
<div><ruby>み<rt>annotation</rt>ず<rt>annotation</rt></ruby></div>
<div><ruby><span><span>み</span></span><rt>annotation</rt><span><span>ず</span></span><rt>annotation</rt></ruby></div>
<div><ruby><span>み<img style="position: absolute;"></span><rt>annotation</rt>ず<rt>annotation</rt></ruby></div>
<!-- no breaking opportunity from this point -->
<div><span style="white-space: nowrap"><ruby>み<rt>annotation</rt>ず<rt>annotation</rt></ruby></soan></div>
<div><ruby style="white-space: nowrap">み<rt>annotation</rt>ず<rt>annotation</rt></ruby></soan></div>
<div><ruby>base<rt>annotation</rt>base<rt>annotation</rt></ruby></div>