- 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.h
#ifndef ATOM_BROWSER_API_ATOM_API_SESSION_H_
#define ATOM_BROWSER_API_ATOM_API_SESSION_H_
#include <string>
#include "atom/browser/api/trackable_object.h"
#include "content/public/browser/download_manager.h"
#include "native_mate/handle.h"
#include "net/base/completion_callback.h"
class GURL;
namespace base {
class FilePath;
}
namespace mate {
class Arguments;