Surface error messages from ONC parsing in about:policy.

chrome/browser/policy/configuration_policy_handler_chromeos.cc

+// Copyright (c) 2011 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/configuration_policy_handler_chromeos.h"
+
+#include <string>
+
+#include "chrome/browser/chromeos/cros/onc_network_parser.h"
+#include "chrome/browser/policy/policy_error_map.h"
+#include "grit/generated_resources.h"
+
+namespace policy {
+
+NetworkConfigurationPolicyHandler::NetworkConfigurationPolicyHandler(
+    ConfigurationPolicyType type)
+    : TypeCheckingPolicyHandler(type, Value::TYPE_STRING) {}
+
+NetworkConfigurationPolicyHandler::~NetworkConfigurationPolicyHandler() {}
+
+bool NetworkConfigurationPolicyHandler::CheckPolicySettings(
+    const PolicyMap* policies,
+    PolicyErrorMap* errors) {
+  const Value* value;
+  if (!TypeCheckingPolicyHandler::CheckAndGetValue(policies, errors, &value))
+    return false;
+
+  if (value) {
+    std::string onc_blob;
+    value->GetAsString(&onc_blob);
+    chromeos::OncNetworkParser parser(onc_blob);
+    if (!parser.parse_error().empty()) {
+      errors->AddError(policy_type(),
+                       IDS_POLICY_NETWORK_CONFIG_PARSE_ERROR,
+                       parser.parse_error());
+      return false;
+    }
+  }
+
+  return true;
+}
+
+void NetworkConfigurationPolicyHandler::ApplyPolicySettings(
+    const PolicyMap* policies,
+    PrefValueMap* prefs) {}
+
+}  // namespace policy