Eliminate createInlineBox and dirtyLineBoxes from RenderObject.  These functions have been devirtualized.
        The single call site now calls a helper function that just bit checks and casts before calling the correct
        type.  RenderBlock's dirtyLineBoxes function was dead code (caused by the RenderFlow deletion), so it has
        just been removed.

        Reviewed by Eric Seidel

        * rendering/RenderBR.cpp:
        * rendering/RenderBR.h:
        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::createRootInlineBox):
        * rendering/RenderBlock.h:
        * rendering/RenderBox.cpp:
        (WebCore::RenderBox::createInlineBox):
        * rendering/RenderBox.h:
        * rendering/RenderCounter.cpp:
        * rendering/RenderCounter.h:
        * rendering/RenderInline.cpp:
        (WebCore::RenderInline::createInlineFlowBox):
        * rendering/RenderInline.h:
        * rendering/RenderObject.cpp:
        * rendering/RenderObject.h:
        * rendering/RenderSVGInlineText.cpp:
        (WebCore::RenderSVGInlineText::createTextBox):
        * rendering/RenderSVGInlineText.h:
        (WebCore::RenderSVGInlineText::isSVGText):
        * rendering/RenderText.cpp:
        (WebCore::RenderText::createTextBox):
        (WebCore::RenderText::createInlineTextBox):
        * rendering/RenderText.h:
        * rendering/bidi.cpp:
        (WebCore::createInlineBoxForRenderer):
        (WebCore::RenderBlock::createLineBoxes):
        (WebCore::RenderBlock::constructLine):
        (WebCore::RenderBlock::layoutInlineChildren):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@40880 268f45cc-cd09-0410-ab3c-d52691b4dbfc