val->SetTwips(font? font->mSize:0);
val->SetTwips(font? font->mFont.size:0);
nsComputedDOMStyle::GetFontSize(nsIFrame *aFrame,                                nsIDOMCSSValue** aValue){  nsROCSSPrimitiveValue* val = GetROCSSPrimitiveValue();  NS_ENSURE_TRUE(val, NS_ERROR_OUT_OF_MEMORY);  const nsStyleFont* font = nsnull;  GetStyleData(eStyleStruct_Font, (const nsStyleStruct*&)font, aFrame);  // Note: font->mSize is the 'computed size'; font->mFont.size is the  // 'actual size'  val->SetTwips(font? font->mSize:0);  return CallQueryInterface(val, aValue);}