[Athena] Extract Chrome OS authentication stack

chrome/browser/chromeos/login/auth/user_context.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_USER_CONTEXT_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_USER_CONTEXT_H_
-
-#include <string>
-
-#include "chrome/browser/chromeos/login/auth/key.h"
-#include "components/user_manager/user_type.h"
-
-namespace chromeos {
-
-// Information that is passed around while authentication is in progress. The
-// credentials may consist of a |user_id_|, |key_| pair or a GAIA |auth_code_|.
-// The |user_id_hash_| is used to locate the user's home directory
-// mount point for the user. It is set when the mount has been completed.
-class UserContext {
- public:
-  // The authentication flow used during sign-in.
-  enum AuthFlow {
-    // Online authentication against GAIA. GAIA did not redirect to a SAML IdP.
-    AUTH_FLOW_GAIA_WITHOUT_SAML,
-    // Online authentication against GAIA. GAIA redirected to a SAML IdP.
-    AUTH_FLOW_GAIA_WITH_SAML,
-    // Offline authentication against a cached key.
-    AUTH_FLOW_OFFLINE
-  };
-
-  UserContext();
-  UserContext(const UserContext& other);
-  explicit UserContext(const std::string& user_id);
-  UserContext(user_manager::UserType user_type, const std::string& user_id);
-  ~UserContext();
-
-  bool operator==(const UserContext& context) const;
-  bool operator!=(const UserContext& context) const;
-
-  const std::string& GetUserID() const;
-  const Key* GetKey() const;
-  Key* GetKey();
-  const std::string& GetAuthCode() const;
-  const std::string& GetUserIDHash() const;
-  bool IsUsingOAuth() const;
-  AuthFlow GetAuthFlow() const;
-  user_manager::UserType GetUserType() const;
-
-  bool HasCredentials() const;
-
-  void SetUserID(const std::string& user_id);
-  void SetKey(const Key& key);
-  void SetAuthCode(const std::string& auth_code);
-  void SetUserIDHash(const std::string& user_id_hash);
-  void SetIsUsingOAuth(bool is_using_oauth);
-  void SetAuthFlow(AuthFlow auth_flow);
-  void SetUserType(user_manager::UserType user_type);
-
-  void ClearSecrets();
-
- private:
-  std::string user_id_;
-  Key key_;
-  std::string auth_code_;
-  std::string user_id_hash_;
-  bool is_using_oauth_;
-  AuthFlow auth_flow_;
-  user_manager::UserType user_type_;
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_USER_CONTEXT_H_