user_manager component: Add UserManagerBase class.

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 <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "components/user_manager/user_image/user_image.h"
 #include "components/user_manager/user_info.h"
 #include "components/user_manager/user_manager_export.h"
 #include "components/user_manager/user_type.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace chromeos {
+class ChromeUserManager;
 class FakeLoginUtils;
 class FakeUserManager;
 class MockUserManager;
 class SupervisedUserManagerImpl;
 class UserAddingScreenTest;
 class UserImageManagerImpl;
-class UserManagerImpl;
+class UserManagerBase;
 class UserSessionManager;
 }
 
 namespace user_manager {
 
 // A class representing information about a previously logged in user.
 // Each user has a canonical email (username), returned by |email()| and
 // may have a different displayed email (in the raw form as entered by user),
 // returned by |displayed_email()|.
 // Displayed emails are for use in UI only, anywhere else users must be referred
@@ skipping 102 matching lines @@
   // True if current user is logged in.
   virtual bool is_logged_in() const;
 
   // True if current user is active within the current session.
   virtual bool is_active() const;
 
   // True if the user Profile is created.
   bool is_profile_created() const { return profile_is_created_; }
 
  protected:
+  friend class chromeos::ChromeUserManager;
   friend class chromeos::SupervisedUserManagerImpl;
-  friend class chromeos::UserManagerImpl;
   friend class chromeos::UserImageManagerImpl;
+  friend class chromeos::UserManagerBase;
   friend class chromeos::UserSessionManager;
 
   // For testing:
   friend class chromeos::MockUserManager;
   friend class chromeos::FakeLoginUtils;
   friend class chromeos::FakeUserManager;
   friend class chromeos::UserAddingScreenTest;
 
   // Do not allow anyone else to create new User instances.
   static User* CreateRegularUser(const std::string& email);
@@ skipping 102 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(User);
 };
 
 // List of known users.
 typedef std::vector<User*> UserList;
 
 }  // namespace user_manager
 
 #endif  // COMPONENTS_USER_MANAGER_USER_H_