We shouldn't be using these classes directly in WebCore, as we soon won't have headers for them.
<rdar://problem/8251368>
Created attachment 63057 [details] Patch
Committed r64361: <http://trac.webkit.org/changeset/64361>
Also r64363: http://trac.webkit.org/changeset/64363 But then rolled out in r64364: http://trac.webkit.org/changeset/64364
Reopening since this was rolled out.
Committed r70129: <http://trac.webkit.org/changeset/70129>
And r70130: http://trac.webkit.org/changeset/70130