Reviewed by Geoose

        <rdar://problem/4664154> and http://bugs.webkit.org/show_bug.cgi?id=3546

        Layout test that covers opening an empty new window, then starting to navigate around in it

        * history/new-window-redirect-history-expected.txt: Added.
        * history/new-window-redirect-history.html: Added.
        * history/resources/redirect-1.html: Added.
        * history/resources/redirect-2.html: Added.

WebCore:

        Reviewed by Black Sheep

        <rdar://problem/4664154> and http://bugs.webkit.org/show_bug.cgi?id=3546

        When you click on a link that opens in a new window from within gmail, they first create a new window 
        with an empty URL, then immediately document.write() into the window to schedule a redirect.

        Since the initial page doesn't have a URL associated with it, a history item never gets created.  The 
        reasonable solution?  To actually create the history item after the redirect (in updateHistoryForInternalLoad)

        * loader/FrameLoader.cpp:
        (WebCore::FrameLoader::addHistoryForCurrentLocation): Updates global and B/F history with a new history item
        (WebCore::FrameLoader::updateHistoryForStandardLoad): Call addHistoryForCurrentLocation
        (WebCore::FrameLoader::updateHistoryForInternalLoad): Call addHistoryForCurrentLocation if there is not already
          a current history item
        * loader/FrameLoader.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@20878 268f45cc-cd09-0410-ab3c-d52691b4dbfc