<rdar://problem/4056100> REGRESSION (Tiger): Deleting top part of reply email leaves fails to clear text at end of message

        The problem was triggered by the fact that the parent div was changing both
        in position and in height. The renderer normally bifurcates its logic for
        x-position changes vs height changes.

        Call repaintDuringLayoutIfMoved() with old rect (incl. width and height) instead of just the old position.

        Test added:
        * manual-tests/delete-into-nested-block.html
        
        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::layoutBlockChildren):
        (WebCore::RenderBlock::positionNewFloats):
        * rendering/RenderBox.cpp:
        (WebCore::RenderBox::repaintDuringLayoutIfMoved):
        * rendering/RenderBox.h:
        * rendering/RenderFlexibleBox.cpp:
        (WebCore::RenderFlexibleBox::placeChild):
        * rendering/RenderObject.cpp:
        (WebCore::RenderObject::repaintDuringLayoutIfMoved):
        * rendering/RenderObject.h:
        * rendering/RenderTableSection.cpp:
        (WebCore::RenderTableSection::layoutRows):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@17824 268f45cc-cd09-0410-ab3c-d52691b4dbfc