Implement the windows policy provider based on the AsyncPolicyLoader.

chrome/browser/policy/configuration_policy_provider_win.h

-// Copyright (c) 2012 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_POLICY_CONFIGURATION_POLICY_PROVIDER_WIN_H_
-#define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_WIN_H_
-#pragma once
-
-#include "chrome/browser/policy/asynchronous_policy_provider.h"
-
-namespace policy {
-
-// An implementation of |ConfigurationPolicyProvider| using the
-// mechanism provided by Windows Groups Policy. Policy decisions are
-// stored as values in a special section of the Windows Registry.
-// On a managed machine in a domain, this portion of the registry is
-// periodically updated by the Windows Group Policy machinery to contain
-// the latest version of the policy set by administrators.
-class ConfigurationPolicyProviderWin : public AsynchronousPolicyProvider {
- public:
-  explicit ConfigurationPolicyProviderWin(
-      const PolicyDefinitionList* policy_list);
-  virtual ~ConfigurationPolicyProviderWin() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProviderWin);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_WIN_H_