Chromad: Add authentication flow

components/user_manager/user.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 COMPONENTS_USER_MANAGER_USER_H_
 #define COMPONENTS_USER_MANAGER_USER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 89 matching lines @@
   // Returns the user type.
   virtual UserType GetType() const = 0;
 
   // Allows managing child status of the user. Used for RegularUser.
   virtual void SetIsChild(bool is_child);
 
   // Returns true if user has gaia account. True for users of types
   // USER_TYPE_REGULAR and USER_TYPE_CHILD.
   virtual bool HasGaiaAccount() const;
 
+  // Returns true if it's Active Directory user.
+  virtual bool IsActiveDirectoryUser() const;
+
   // Returns true if user is supervised.
   virtual bool IsSupervised() const;
 
   // True if user image can be synced.
   virtual bool CanSyncImage() const;
 
   // The displayed (non-canonical) user email.
   virtual std::string display_email() const;
 
   // True if the user is affiliated to the device.
@@ skipping 190 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(User);
 };
 
 // List of known users.
 using UserList = std::vector<User*>;
 
 }  // namespace user_manager
 
 #endif  // COMPONENTS_USER_MANAGER_USER_H_