Merge {Device,User}ActiveDirectoryPolicyManager into a single class

chrome/browser/chromeos/policy/device_active_directory_policy_manager.h

-// 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 CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_ACTIVE_DIRECTORY_POLICY_MANAGER_H_
-#define CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_ACTIVE_DIRECTORY_POLICY_MANAGER_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "components/policy/core/common/cloud/cloud_policy_store.h"
-#include "components/policy/core/common/configuration_policy_provider.h"
-
-namespace policy {
-
-// ConfigurationPolicyProvider for policy from Active Directory.  The policy is
-// fetched from the Domain Controller by authpolicyd which stores it in session
-// manager and from where it is loaded by DeviceActiveDirectoryPolicyManager.
-class DeviceActiveDirectoryPolicyManager : public ConfigurationPolicyProvider,
-                                           public CloudPolicyStore::Observer {
- public:
-  explicit DeviceActiveDirectoryPolicyManager(
-      std::unique_ptr<CloudPolicyStore> store);
-  ~DeviceActiveDirectoryPolicyManager() override;
-
-  // ConfigurationPolicyProvider:
-  void Init(SchemaRegistry* registry) override;
-  void Shutdown() override;
-  bool IsInitializationComplete(PolicyDomain domain) const override;
-  void RefreshPolicies() override;
-
-  // CloudPolicyStore::Observer:
-  void OnStoreLoaded(CloudPolicyStore* cloud_policy_store) override;
-  void OnStoreError(CloudPolicyStore* cloud_policy_store) override;
-
-  CloudPolicyStore* store() const { return store_.get(); }
-
- private:
-  // Publishes the policy that's currently cached in the store.
-  void PublishPolicy();
-
-  // Callback from authpolicyd.
-  void OnPolicyRefreshed(bool success);
-
-  std::unique_ptr<CloudPolicyStore> store_;
-
-  // Must be last member.
-  base::WeakPtrFactory<DeviceActiveDirectoryPolicyManager> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceActiveDirectoryPolicyManager);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_ACTIVE_DIRECTORY_POLICY_MANAGER_H_