rv->mInHeap = 0;
rv->mInHeap = 1;
void* CSSStyleSheetImpl::operator new(size_t size, nsIArena* aArena){  CSSStyleSheetImpl* rv = (CSSStyleSheetImpl*) aArena->Alloc(PRInt32(size));#ifdef NS_DEBUG  if (nsnull != rv) {    memset(rv, 0xEE, size);  }#endif  rv->mInHeap = 0;  return (void*) rv;}