WebCore:

WebCore:

        Reviewed by Brady.

        - removed WebKit-level dependencies from WebFormDataStream. Use WebCore version of system interface

        * WebCore.exp: export new functions
        * platform/mac/WebCoreSystemInterface.h: Added CFReadStream related functions
        * platform/mac/WebCoreSystemInterface.mm: ditto

WebKit:

        Reviewed by Brady.

        - removed WebKit-level dependencies from WebFormDataStream. Use WebCore version of system interface

        * Loader/WebFormDataStream.m:
        (formCanRead):
        (formEventCallback):
        (webSetHTTPBody):
        * WebCoreSupport/WebSystemInterface.m:
        (InitWebCoreSystemInterface):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@15854 268f45cc-cd09-0410-ab3c-d52691b4dbfc