Add ManagedModePolicyProvider and extension API to get and set policies.

chrome/browser/policy/managed_mode_policy_provider_factory.cc

+// 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.
+
+#include "chrome/browser/policy/managed_mode_policy_provider_factory.h"
+
+#include "chrome/browser/policy/managed_mode_policy_provider.h"
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+
+using policy::ManagedModePolicyProvider;
+
+// static
+ManagedModePolicyProviderFactory*
+    ManagedModePolicyProviderFactory::GetInstance() {
+  return Singleton<ManagedModePolicyProviderFactory>::get();
+}
+
+// static
+ManagedModePolicyProvider*
+    ManagedModePolicyProviderFactory::GetForProfile(Profile* profile) {
+  return static_cast<ManagedModePolicyProvider*>(
+      GetInstance()->GetServiceForProfile(profile, true));
+}
+
+ManagedModePolicyProviderFactory::ManagedModePolicyProviderFactory()
+    : ProfileKeyedServiceFactory("ManagedModePolicyProvider",
+                                 ProfileDependencyManager::GetInstance()) {}
+ManagedModePolicyProviderFactory::~ManagedModePolicyProviderFactory() {}
+
+ProfileKeyedService* ManagedModePolicyProviderFactory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  return ManagedModePolicyProvider::Create(profile);
+}