- http://bugs.webkit.org/show_bug.cgi?id=13496
          Eliminate repaintObjectsBeforeLayout

        No tests added since there is no change to functionality. Several
        tests in fast/repaint test repainting of objects that move during layout.

        * page/FrameView.cpp:
        (WebCore::FrameView::layout):
        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::layoutBlockChildren): Removed an early
        setNeedsLayout(false). Resetting the bit here prevents the full repaint
        that we rely on when we decide not to repaint children that move.
        * rendering/RenderBlock.h:
        * rendering/RenderObject.cpp:
        * rendering/RenderObject.h:
        * rendering/RenderTableSection.cpp:
        (WebCore::RenderTableSection::setCellWidths): Replaced the call to
        repaintObjectsBeforeLayout() if the cell didn't need layout with
        an unconditional repaint(). We don't bother with repainting only the
        delta between the old and new widths, since by marking the cell for
        layout results in a full repaint with the new width anyway.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@21120 268f45cc-cd09-0410-ab3c-d52691b4dbfc