[WK2] WKContextClient doesn't need to be versioned yet
        https://bugs.webkit.org/show_bug.cgi?id=115279

        Reviewed by Anders Carlsson.

        * Shared/APIClientTraits.cpp:
        * Shared/APIClientTraits.h:
        * UIProcess/API/C/WKContext.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149212 268f45cc-cd09-0410-ab3c-d52691b4dbfc