nsIFrame* aFrame, nsStyleChangeList& aChangeList, PRInt32 aMinChange)
nsIFrame* aFrame, nsIContent* aContent, nsStyleChangeList& aChangeList, PRInt32 aMinChange)
CaptureChange(nsIStyleContext* aOldContext, nsIStyleContext* aNewContext,              nsIFrame* aFrame, nsStyleChangeList& aChangeList,              PRInt32 aMinChange){  PRInt32 ourChange = NS_STYLE_HINT_NONE;  aNewContext->CalcStyleDifference(aOldContext, ourChange);  if (aMinChange < ourChange) {    aChangeList.AppendChange(aFrame, ourChange);    aMinChange = ourChange;  }  return aMinChange;}