Remove dependency on CoreFoundation from WebURLResponse
https://bugs.webkit.org/show_bug.cgi?id=119390

Reviewed by Brent Fulgham.

* WebURLResponse.cpp:
(localizedShortDescriptionForStatusCode):
(WebURLResponse::localizedStringForStatusCode):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153779 268f45cc-cd09-0410-ab3c-d52691b4dbfc