and fixed backgrounds so that a count of them is kept on the FrameView.
        This allows us to switch slow scrolling on and off as these objects come
        and go.

        * css/cssstyleselector.cpp:
        (WebCore::CSSStyleSelector::adjustRenderStyle):
        (WebCore::CSSStyleSelector::applyProperty):
        * page/FrameView.cpp:
        (WebCore::FrameViewPrivate::reset):
        (WebCore::FrameView::layout):
        (WebCore::FrameView::useSlowRepaints):
        (WebCore::FrameView::setUseSlowRepaints):
        (WebCore::FrameView::addSlowRepaintObject):
        (WebCore::FrameView::removeSlowRepaintObject):
        * page/FrameView.h:
        * rendering/RenderBox.cpp:
        (WebCore::RenderBox::paintBackgroundExtended):
        * rendering/RenderObject.cpp:
        (WebCore::RenderObject::setStyle):
        * rendering/RenderView.cpp:
        (WebCore::RenderView::paintBoxDecorations):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15722 268f45cc-cd09-0410-ab3c-d52691b4dbfc