- 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
class Dictionary;
}
namespace net {
class ProxyConfig;
}
namespace atom {
class AtomBrowserContext;
namespace api {
class Session: public mate::TrackableObject<Session>,
               public content::DownloadManager::Observer {
 public:
  using ResolveProxyCallback = base::Callback<void(std::string)>;
  enum class CacheAction {
    CLEAR,
    STATS,
  };
  
  static mate::Handle<Session> CreateFrom(
      v8::Isolate* isolate, AtomBrowserContext* browser_context);
  
  static mate::Handle<Session> FromPartition(
      v8::Isolate* isolate, const std::string& partition, bool in_memory);
  AtomBrowserContext* browser_context() const { return browser_context_.get(); }
  
  static void BuildPrototype(v8::Isolate* isolate,
                             v8::Local<v8::ObjectTemplate> prototype);
 protected:
  Session(v8::Isolate* isolate, AtomBrowserContext* browser_context);
  ~Session();