RenderLineBoxList::anyLineIntersectsRect, lineIntersectsDirtyRect, and rangeIntersectsRect all use tx/ty to represent offsets from painting and hit testing.
Created attachment 95468 [details] Patch
Comment on attachment 95468 [details] Patch OK.
Comment on attachment 95468 [details] Patch Clearing flags on attachment: 95468 Committed r87825: <http://trac.webkit.org/changeset/87825>
All reviewed patches have been landed. Closing bug.