return nsComponentManager::CreateInstance(  aContractID,
return mCompMgr->CreateInstanceByContractID(aContractID,
NS_IMETHODIMP nsProxyCreateInstance::CreateInstanceByContractID(const char *aContractID, nsISupports *aOuter, const nsIID & iid, void * *result){    return nsComponentManager::CreateInstance(  aContractID,                                                 aOuter,                                                iid,                                                result);}