Fix the iOS build after r167183.

* platform/network/ResourceHandle.h:
* platform/network/cf/ResourceHandleCFNet.cpp:
(WebCore::ResourceHandle::schedule):
(WebCore::ResourceHandle::unschedule):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@167190 268f45cc-cd09-0410-ab3c-d52691b4dbfc