Add DeviceADPolicyManager to provide AD policy.

chrome/browser/chromeos/policy/device_active_directory_policy_manager.cc

+// 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.
+
+#include "chrome/browser/chromeos/policy/device_active_directory_policy_manager.h"
+
+#include <string>
+#include <utility>
+
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "components/policy/core/common/policy_bundle.h"
+#include "components/policy/core/common/policy_types.h"
+
+namespace policy {
+
+DeviceActiveDirectoryPolicyManager::DeviceActiveDirectoryPolicyManager(
+    std::unique_ptr<CloudPolicyStore> store)
+    : store_(std::move(store)) {}
+
+DeviceActiveDirectoryPolicyManager::~DeviceActiveDirectoryPolicyManager() {}
+
+void DeviceActiveDirectoryPolicyManager::Init(SchemaRegistry* registry) {
+  ConfigurationPolicyProvider::Init(registry);
+
+  store_->AddObserver(this);
+  PublishPolicy();
+  if (!store_->is_initialized()) {
+    store_->Load();
+  }
+}
+
+void DeviceActiveDirectoryPolicyManager::Shutdown() {
+  store_->RemoveObserver(this);
+  ConfigurationPolicyProvider::Shutdown();
+}
+
+bool DeviceActiveDirectoryPolicyManager::IsInitializationComplete(
+    PolicyDomain domain) const {
+  if (domain == POLICY_DOMAIN_CHROME)
+    return store_->is_initialized();
+  return true;
+}
+
+void DeviceActiveDirectoryPolicyManager::RefreshPolicies() {
+  store_->Load();
+}
+
+void DeviceActiveDirectoryPolicyManager::OnStoreLoaded(
+    CloudPolicyStore* cloud_policy_store) {
+  DCHECK_EQ(store_.get(), cloud_policy_store);
+  PublishPolicy();
+}
+
+void DeviceActiveDirectoryPolicyManager::OnStoreError(
+    CloudPolicyStore* cloud_policy_store) {
+  DCHECK_EQ(store_.get(), cloud_policy_store);
+  // Publish policy (even though it hasn't changed) in order to signal load
+  // complete on the ConfigurationPolicyProvider interface. Technically, this is
+  // only required on the first load, but doesn't hurt in any case.
+  PublishPolicy();
+}
+
+void DeviceActiveDirectoryPolicyManager::PublishPolicy() {
+  if (!store_->is_initialized()) {
+    return;
+  }
+  std::unique_ptr<PolicyBundle> bundle = base::MakeUnique<PolicyBundle>();
+  PolicyMap& policy_map =
+      bundle->Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()));
+  policy_map.CopyFrom(store_->policy_map());
+
+  // Overwrite the source which is POLICY_SOURCE_CLOUD by default.
+  // TODO(tnagel): Rename CloudPolicyStore to PolicyStore and make the source
+  // configurable, then drop PolicyMap::SetSourceForAll().
+  policy_map.SetSourceForAll(POLICY_SOURCE_ACTIVE_DIRECTORY);
+  UpdatePolicy(std::move(bundle));
+}
+
+}  // namespace policy