Reviewed by Darin, Geoff.

    Reviewed by Darin, Geoff.

        Get rid of ResourceHandle::kill(), all it did was to balance out a ref() in ResourceHandle::start().
        We use RefPtrs to ResourceHandle instead.

        * loader/icon/IconLoader.cpp:
        (WebCore::IconLoader::~IconLoader):
        (WebCore::IconLoader::stopLoading):
        (WebCore::IconLoader::didReceiveResponse):
        * loader/loader.cpp:
        (WebCore::Loader::servePendingRequests):
        (WebCore::Loader::cancelRequests):
        (WebCore::Loader::jobForRequest):
        * loader/loader.h:
        * platform/network/ResourceHandle.cpp:
        * platform/network/ResourceHandle.h:
        * platform/network/mac/ResourceHandleMac.mm:
        (WebCore::ResourceHandle::start):
        (WebCore::ResourceHandle::finishJobAndHandle):
        (WebCore::ResourceHandle::reportError):
        * xml/xmlhttprequest.cpp:
        (WebCore::XMLHttpRequest::abort):
        (WebCore::XMLHttpRequest::didFinishLoading):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@18006 268f45cc-cd09-0410-ab3c-d52691b4dbfc