mFrames.DestroyFrame(GetPresContext(), aOldFrame); return ChildListChanged(nsIDOMMutationEvent::REMOVAL); }
  RemoveFrame(nsPresContext* aPresContext,              nsIPresShell&   aPresShell,              nsIAtom*        aListName,              nsIFrame*       aOldFrame)  {    nsresult rv = nsBlockFrame::RemoveFrame(aPresContext, aPresShell, aListName, aOldFrame);    nsMathMLContainerFrame::ReLayoutChildren(aPresContext, this);    return rv;  }