Mark accessibility/mac/line-index-for-textmarker.html as Slow in Mac-wk2 Debug.
<rdar://problem/88757785>
Created attachment 451546 [details] Patch
Committed r289543 (247074@main): <https://commits.webkit.org/247074@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 451546 [details].