Display policy parsing errors in about:policy.

chrome/browser/policy/policy_error_map.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/policy_error_map.h"
 
 #include <utility>
 
+#include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace policy {
 
 struct PolicyErrorMap::PendingError {
   PendingError(ConfigurationPolicyType policy,
                int message_id,
                const string16& replacement)
@@ skipping 24 matching lines @@
 void PolicyErrorMap::AddError(ConfigurationPolicyType policy, int message_id) {
   AddError(PendingError(policy, message_id));
 }
 
 void PolicyErrorMap::AddError(ConfigurationPolicyType policy,
                               int message_id,
                               const std::string& replacement) {
   AddError(PendingError(policy, message_id, ASCIIToUTF16(replacement)));
 }
 
-ListValue* PolicyErrorMap::GetErrors(ConfigurationPolicyType policy) {
+string16 PolicyErrorMap::GetErrors(ConfigurationPolicyType policy) {
   CheckReadyAndConvert();
   std::pair<const_iterator, const_iterator> range = map_.equal_range(policy);
-
-  if (range.first == range.second)
-    return NULL;
-
-  ListValue* list = new ListValue();
+  std::vector<string16> list;
   for (const_iterator it = range.first; it != range.second; ++it)
-    list->Append(Value::CreateStringValue(it->second));
-
-  return list;
+    list.push_back(it->second);
+  return JoinString(list, ' ');
 }
 
 bool PolicyErrorMap::empty() {
   CheckReadyAndConvert();
   return map_.empty();
 }
 
 size_t PolicyErrorMap::size() {
   CheckReadyAndConvert();
   return map_.size();
@@ skipping 33 matching lines @@
 
 void PolicyErrorMap::CheckReadyAndConvert() {
   DCHECK(IsReady());
   for (size_t i = 0; i < pending_.size(); ++i) {
     Convert(pending_[i]);
   }
   pending_.clear();
 }
 
 }  // namespace policy