NS_ADDREF(mURL);
mURL.SetAddRef(aURL); #ifdef DEBUG_REFS ++gInstanceCount; fprintf(stdout, "%d + CSSStyleSheet size: %d\n", gInstanceCount, sizeof(*this)); #endif
CSSStyleSheetImpl::CSSStyleSheetImpl(nsIURL* aURL)  : nsICSSStyleSheet(),    mURL(aURL), mFirstChild(nsnull), mRules(nsnull), mNext(nsnull){  NS_INIT_REFCNT();  NS_ADDREF(mURL);}