void* operator new(size_t sz, nsIPresContext* aContext) CPP_THROW_NEW { return aContext->AllocateFromShell(sz); };
nsRuleNode::operator new(size_t sz, nsPresContext* aPresContext) CPP_THROW_NEW {  return aPresContext->AllocateFromShell(sz); }
  void* operator new(size_t sz, nsIPresContext* aContext) CPP_THROW_NEW {    return aContext->AllocateFromShell(sz);  };