Reviewed by Eric.

    Reviewed by Eric.

        - move m_responseMIMEType out of ResourceRequest, where it doesn't belong

        * page/FramePrivate.h: Add m_responseMIMEType
        * page/ResourceRequest.h: Remove m_responseMIMEType
        * page/Frame.cpp:
        (WebCore::Frame::setResponseMIMEType): added
        (WebCore::Frame::responseMIMEType): added
        (WebCore::Frame::begin): get MIME type from the right place
        (WebCore::Frame::write): ditto
        * page/Frame.h:
        * bindings/js/kjs_window.cpp:
        (KJS::createNewWindow): updated to use new Frame methods
        (KJS::WindowFunc::callAsFunction): ditto
        * bridge/mac/WebCoreFrameBridge.mm:
        (-[WebCoreFrameBridge openURL:reload:contentType:refresh:lastModified:pageCache:]): ditto
        (-[WebCoreFrameBridge canProvideDocumentSource]): ditto
        * loader/PluginDocument.cpp:
        (WebCore::PluginTokenizer::createDocumentStructure): ditto

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@17006 268f45cc-cd09-0410-ab3c-d52691b4dbfc