- Electron version: >=0.37
- Operating system: ubuntu linux x64

When server send header 'WWW-Authenticate: Negotiate' electron not send kerberos ticket. 
`app.allowNTLMCredentialsForAllDomains(true)`  is called.

On electron v0.36.x it work's fine.

atom/browser/api/atom_api_app.cc
const base::DictionaryValue& options,
    const net::CompletionCallback& callback) {
  auto browser_context = AtomBrowserMainParts::Get()->browser_context();
  if (!certificate_manager_model_) {
    scoped_ptr<base::DictionaryValue> copy = options.CreateDeepCopy();
    CertificateManagerModel::Create(browser_context,
        base::Bind(&App::OnCertificateManagerModelCreated,
                   base::Unretained(this),
                   base::Passed(&copy),
                   callback));
    return;
  }
  int rv = ImportIntoCertStore(certificate_manager_model_.get(), options);
  callback.Run(rv);
}
void App::OnCertificateManagerModelCreated(
    scoped_ptr<base::DictionaryValue> options,
    const net::CompletionCallback& callback,
    scoped_ptr<CertificateManagerModel> model) {
  certificate_manager_model_ = std::move(model);
  int rv = ImportIntoCertStore(certificate_manager_model_.get(),
                               *(options.get()));
  callback.Run(rv);
}
#endif
mate::Handle<App> App::Create(v8::Isolate* isolate) {