Move UserContext to its own file

chrome/browser/managed_mode/chromeos/manager_password_service.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_MANAGED_MODE_CHROMEOS_MANAGER_PASSWORD_SERVICE_H_
 #define CHROME_BROWSER_MANAGED_MODE_CHROMEOS_MANAGER_PASSWORD_SERVICE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/login/auth/extended_authenticator.h"
 #include "chrome/browser/managed_mode/managed_user_shared_settings_service.h"
 #include "chrome/browser/managed_mode/managed_user_sync_service.h"
 #include "chrome/browser/managed_mode/managed_users.h"
 #include "components/keyed_service/core/keyed_service.h"
 
 namespace chromeos {
 
+class UserContext;
+
 // Handles managed user password change that is detected while manager is
 // signed in.
 // It uses manager's master key to authorize update of managed user's key.
 // Edge case: Pre-M35 supervised users don't have correct labels for keys.
 // After new managed user key is added, migration is done in following way:
 // 1) Master key is added with correct label
 // 2) Old managed user's key is deleted.
 // 3) Old master key is deleted.
 class ManagerPasswordService
     : public KeyedService,
@@ skipping 37 matching lines @@
 
   scoped_refptr<ExtendedAuthenticator> authenticator_;
 
   base::WeakPtrFactory<ManagerPasswordService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ManagerPasswordService);
 };
 
 }  // namespace chromeos
 #endif  // CHROME_BROWSER_MANAGED_MODE_CHROMEOS_MANAGER_PASSWORD_SERVICE_H_