Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

extensions/browser/api/networking_private/networking_private_chromeos.cc

 // Copyright 2014 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 "extensions/browser/api/networking_private/networking_private_chromeos.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 338 matching lines @@
     bool visible_only,
     int limit,
     const NetworkListCallback& success_callback,
     const FailureCallback& failure_callback) {
   NetworkTypePattern pattern =
       chromeos::onc::NetworkTypePatternFromOncType(network_type);
   std::unique_ptr<base::ListValue> network_properties_list =
       chromeos::network_util::TranslateNetworkListToONC(
           pattern, configured_only, visible_only, limit);
 
-  for (base::Value* value : *network_properties_list) {
+  for (const auto& value : *network_properties_list) {
     base::DictionaryValue* network_dict = nullptr;
     value->GetAsDictionary(&network_dict);
     DCHECK(network_dict);
     if (GetThirdPartyVPNDictionary(network_dict))
       AppendThirdPartyProviderName(network_dict);
   }
 
   success_callback.Run(std::move(network_properties_list));
 }
 
@@ skipping 295 matching lines @@
   // Eventually the caller (e.g. Settings) should handle any failures and
   // show its own configuration UI. crbug.com/380937.
   if (ui_delegate()->HandleConnectFailed(guid, error_name)) {
     success_callback.Run();
     return;
   }
   failure_callback.Run(error_name);
 }
 
 }  // namespace extensions