Settings to disable simple line layout and to draw debug borders.
Created attachment 215521 [details] patch
Comment on attachment 215521 [details] patch Well that was trivial. r=me & stuff.
Comment on attachment 215521 [details] patch Attachment 215521 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/17058217
https://trac.webkit.org/r158279