Reviewed by Anders

        <rdar://problem/3028061> - WebKit never updates favicon
        The WebKit enforced expiration date for icons has worked for some time, but the
        move to the new Icon Loader broke the "always get the icon if the user refreshes the page" 
        functionality.  This patch fixes that up, along with some other architectural improvements,
        the main one being that WebCore::Document now contains an iconURL for the Frame to query if needed.

        * bridge/mac/FrameMac.h: Added isLoadTypeReload()
        * bridge/mac/FrameMac.mm:
        (WebCore::FrameMac::isLoadTypeReload): Implementation, calls into the bridge
        * bridge/mac/WebCoreFrameBridge.h: Added isLoadTypeReload:
        * bridge/win/FrameWin.h: Added isLoadTypeReload() for temporary link stub
        * dom/Document.h: Added m_iconURL
        (WebCore::Document::iconURL): Added
        (WebCore::Document::setIconURL): Ditto
        * html/HTMLLinkElement.cpp:
        (WebCore::HTMLLinkElement::process): Sets the iconURL in the Document instead of the Frame
        * page/Frame.cpp:
        (WebCore::Frame::iconURL): Calculates the iconURL based on the document, then the default favicon.ico url
        (WebCore::Frame::endIfNotLoading): Checks for the load type - always loads icon on Reload
        * page/Frame.h: Nuked setIconURL(), added isLoadTypeReload()
        * page/FramePrivate.h: Nuked IconURL
        * platform/win/TemporaryLinkStubs.cpp:
        (FrameWin::isLoadTypeReload):

WebKit:

        Reviewed by Anders

        Implement a bridge method so WebCore can find the reload type of a frame load

        * WebCoreSupport/WebFrameBridge.m:
        (-[WebFrameBridge isLoadTypeReload]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@16440 268f45cc-cd09-0410-ab3c-d52691b4dbfc