nsFrameItems::AddChild(nsIFrame* aChild)
nsFrameConstructorState::AddChild(nsIFrame* aNewFrame, nsFrameItems& aFrameItems, const nsStyleDisplay* aStyleDisplay, nsIContent* aContent, nsStyleContext* aStyleContext, nsIFrame* aParentFrame, PRBool aCanBePositioned, PRBool aCanBeFloated)
nsFrameItems::AddChild(nsIFrame* aChild){  if (childList == nsnull) {    childList = lastChild = aChild;  }  else  {    lastChild->SetNextSibling(aChild);    lastChild = aChild;  }  // if aChild has siblings, lastChild needs to be the last one  for (nsIFrame* sib = lastChild->GetNextSibling(); sib;       sib = sib->GetNextSibling()) {    lastChild = sib;  }}