Reviewed by justin
        
        <http://bugzilla.opendarwin.org/show_bug.cgi?id=6933>
        Selection extends beyond focus ring for some contentEditable divs

        * editing/selection/extend-by-word-002-expected.checksum:
        * editing/selection/extend-by-word-002-expected.png:
        * editing/selection/select-all-001-expected.checksum:
        * editing/selection/select-all-001-expected.png:
        * editing/selection/select-all-002-expected.checksum:
        * editing/selection/select-all-002-expected.png:

WebCore:

        <http://bugzilla.opendarwin.org/show_bug.cgi?id=6933>
        Selection extends beyond focus ring for some contentEditable divs

        Reviewed by justin

        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::isSelectionRoot): Have root editable elements paint their
        own selection gaps.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@12986 268f45cc-cd09-0410-ab3c-d52691b4dbfc