- 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_session.cc
: devtools_network_emulation_client_id_(base::GenerateGUID()),
      browser_context_(browser_context) {
  
  content::BrowserContext::GetDownloadManager(browser_context)->
      AddObserver(this);
  Init(isolate);
  AttachAsUserData(browser_context);
}
Session::~Session() {
  content::BrowserContext::GetDownloadManager(browser_context())->
      RemoveObserver(this);
}
void Session::OnDownloadCreated(content::DownloadManager* manager,
                                content::DownloadItem* item) {
  if (item->IsSavePackageDownload())
    return;
  v8::Locker locker(isolate());
  v8::HandleScope handle_scope(isolate());
  bool prevent_default = Emit(
      "will-download",
      DownloadItem::Create(isolate(), item),
      item->GetWebContents());
  if (prevent_default) {
    item->Cancel(true);
    item->Remove();
  }
}
void Session::ResolveProxy(const GURL& url, ResolveProxyCallback callback) {