Move UserContext to its own file

chrome/browser/chromeos/login/auth/extended_authenticator.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_EXTENDED_AUTHENTICATOR_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_EXTENDED_AUTHENTICATOR_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "chrome/browser/chromeos/login/users/user.h"
 #include "chromeos/cryptohome/cryptohome_parameters.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace chromeos {
 
 class LoginStatusConsumer;
+class UserContext;
 
 // Interaction with cryptohome : mounting home dirs, create new home dirs,
 // udpate passwords.
 //
 // Typical flow:
 // AuthenticateToMount() calls a Cryptohome to perform offline login,
 // AuthenticateToCreate() calls a Cryptohome to create new cryptohome.
 class ExtendedAuthenticator
     : public base::RefCountedThreadSafe<ExtendedAuthenticator> {
  public:
@@ skipping 144 matching lines @@
 
   AuthStatusConsumer* consumer_;
   LoginStatusConsumer* old_consumer_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtendedAuthenticator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_EXTENDED_AUTHENTICATOR_H_