Reviewed by Eric Seidel.

        Bug 24251: Cleanup: replace positionForCoordinates with positionForPoint
        <https://bugs.webkit.org/show_bug.cgi?id=24251>

        Make RenderObject::positionForCoordinate non-virtual and
        RenderObject::positionForPoint virtual in preparation for
        removing positionFor* from RenderObject/RenderText.

        * page/Frame.cpp:
        (WebCore::Frame::visiblePositionForPoint):
        * rendering/RenderBR.cpp:
        (WebCore::RenderBR::positionForPoint):
        * rendering/RenderBR.h:
        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::positionForPoint):
        * rendering/RenderBlock.h:
        * rendering/RenderBox.cpp:
        (WebCore::RenderBox::positionForPoint):
        * rendering/RenderBox.h:
        * rendering/RenderInline.cpp:
        (WebCore::RenderInline::positionForPoint):
        * rendering/RenderInline.h:
        * rendering/RenderObject.cpp:
        (WebCore::RenderObject::positionForCoordinates):
        (WebCore::RenderObject::positionForPoint):
        * rendering/RenderObject.h:
        * rendering/RenderReplaced.cpp:
        (WebCore::RenderReplaced::positionForPoint):
        * rendering/RenderReplaced.h:
        * rendering/RenderSVGInlineText.cpp:
        (WebCore::RenderSVGInlineText::positionForPoint):
        * rendering/RenderSVGInlineText.h:
        * rendering/RenderText.cpp:
        (WebCore::RenderText::positionForPoint):
        * rendering/RenderText.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@41347 268f45cc-cd09-0410-ab3c-d52691b4dbfc