Changes to WebCore are simple. Changes to the layouttests results are extensive.
Hm, the patch is to big to post to bugzilla in it's entirety. So, I guess I'll just post the WebCore part for now, and leave the Changes to the test suite up to the imagination.
Created attachment 11891 [details] patch Just the code changes.
Comment on attachment 11891 [details] patch r=me
Landed in 18264.