Add ManagedModePolicyProvider and extension API to get and set policies.

chrome/browser/policy/managed_mode_policy_provider_factory.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_MANAGED_MODE_POLICY_PROVIDER_FACTORY_H_
+#define CHROME_BROWSER_POLICY_MANAGED_MODE_POLICY_PROVIDER_FACTORY_H_
+#pragma once
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/profiles/profile_keyed_service_factory.h"
+
+class Profile;
+
+namespace policy {
+class ManagedModePolicyProvider;
+}
+
+class ManagedModePolicyProviderFactory : public ProfileKeyedServiceFactory {
+ public:
+  static ManagedModePolicyProviderFactory* GetInstance();
+
+  static policy::ManagedModePolicyProvider* GetForProfile(Profile* profile);
+
+ private:
+  friend struct DefaultSingletonTraits<ManagedModePolicyProviderFactory>;
+
+  ManagedModePolicyProviderFactory();
+  virtual ~ManagedModePolicyProviderFactory();
+
+  virtual ProfileKeyedService* BuildServiceInstanceFor(
+      Profile* profile) const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(ManagedModePolicyProviderFactory);
+};
+
+#endif  // CHROME_BROWSER_POLICY_MANAGED_MODE_POLICY_PROVIDER_FACTORY_H_