Add fake implementation for AuthPolicyClient::RefreshUserPolicy()

chromeos/dbus/fake_auth_policy_client.h

-// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Copyright 2016 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 CHROMEOS_DBUS_FAKE_AUTH_POLICY_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_AUTH_POLICY_CLIENT_H_
 
 #include <string>
 
 #include "base/macros.h"
 
 #include "chromeos/dbus/auth_policy_client.h"
 
+class AccountId;
+
 namespace chromeos {
 
 class CHROMEOS_EXPORT FakeAuthPolicyClient : public AuthPolicyClient {
  public:
   FakeAuthPolicyClient();
   ~FakeAuthPolicyClient() override;
 
   // DBusClient overrides.
   void Init(dbus::Bus* bus) override;
   // AuthPolicyClient overrides.
   void JoinAdDomain(const std::string& machine_name,
                     const std::string& user_principal_name,
                     int password_fd,
                     const JoinCallback& callback) override;
   void AuthenticateUser(const std::string& user_principal_name,
                         int password_fd,
                         const AuthCallback& callback) override;
   void RefreshDevicePolicy(const RefreshPolicyCallback& calllback) override;
-  void RefreshUserPolicy(const std::string& account_id,
+  void RefreshUserPolicy(const AccountId& account_id,
                          const RefreshPolicyCallback& callback) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FakeAuthPolicyClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_AUTH_POLICY_CLIENT_H_