Reviewed by Adele.

    Reviewed by Adele.

        - fix http://bugs.webkit.org/show_bug.cgi?id=16442
          navigation policy delegate gets called twice for each load

        * loader/MainResourceLoader.cpp:
        (WebCore::MainResourceLoader::willSendRequest): Removed call to checkNavigationPolicy.
        That's handled by FrameLoader.

        * loader/MainResourceLoader.h: Removed callContinueAfterNavigationPolicy
        and continueAfterNavigationPolicy.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@28726 268f45cc-cd09-0410-ab3c-d52691b4dbfc