CSSRuleListImpl::GetLength(PRUint32* aLength)
DOMMediaListImpl::GetLength(PRUint32* aLength)
CSSRuleListImpl::GetLength(PRUint32* aLength){  if (nsnull != mStyleSheet) {    PRInt32 count;    mStyleSheet->StyleRuleCount(count);    *aLength = (PRUint32)count;  }  else {    *aLength = 0;  }  return NS_OK;}