<rdar://problem/5493833>
        REGRESSION: ~5MB of image data leaked @ cuteoverload.com (often seen while browsing other sites, too)

        * WebCore.xcodeproj/project.pbxproj:
        * bindings/js/kjs_binding.cpp:
        (KJS::ScriptInterpreter::markDOMNodesForDocument):
        If an image element that is currently loading an image is not in the document,
        it should still be marked.
        
        * bindings/js/kjs_html.cpp:
        (WebCore::ImageConstructorImp::construct):
        Force the document wrapper to be created.
        
        * html/HTMLImageElement.h:
        (WebCore::HTMLImageElement::haveFiredLoadEvent):
        New method which calls down to the image loader.
        
        * html/HTMLImageLoader.cpp:
        (WebCore::HTMLImageLoader::HTMLImageLoader):
        (WebCore::HTMLImageLoader::~HTMLImageLoader):
        (WebCore::HTMLImageLoader::setLoadingImage):
        (WebCore::HTMLImageLoader::dispatchLoadEvent):
        Remove code that's not needed anymore.
        
        * html/HTMLImageLoader.h:
        (WebCore::HTMLImageLoader::haveFiredLoadEvent):
        Make this public.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@26992 268f45cc-cd09-0410-ab3c-d52691b4dbfc