PRInt32 n = mChildCount;
PRInt32 n = ChildCount();
LineData::Contains(nsIFrame* aFrame) const{  PRInt32 n = mChildCount;  nsIFrame* frame = mFirstChild;  while (--n >= 0) {    if (frame == aFrame) {      return PR_TRUE;    }    frame->GetNextSibling(frame);  }  return PR_FALSE;}