This caused tests fast/multicol/hit-test-end-of-column-with-line-height.html and fast/multicol/newmulticol/compare-with-old-impl/hit-test-end-of-column-with-line-height.html to start failing.
Created attachment 320763 [details] Patch
Committed r222020: <http://trac.webkit.org/changeset/222020>
<rdar://problem/34693401>