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

chrome/browser/supervised_user/supervised_user_site_list.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 "chrome/browser/supervised_user/supervised_user_site_list.h"
 
 #include <algorithm>
 
 #include "base/files/file_util.h"
 #include "base/json/json_file_value_serializer.h"
@@ skipping 27 matching lines @@
   if (!value) {
     LOG(ERROR) << "Couldn't load site list " << path.value() << ": "
                << error_msg;
   }
   return value;
 }
 
 std::vector<std::string> ConvertListValues(const base::ListValue* list_values) {
   std::vector<std::string> converted;
   if (list_values) {
-    for (const base::Value* entry : *list_values) {
+    for (const auto& entry : *list_values) {
       std::string entry_string;
       if (!entry->GetAsString(&entry_string)) {
         LOG(ERROR) << "Invalid whitelist entry";
         continue;
       }
 
       converted.push_back(entry_string);
     }
   }
   return converted;
@@ skipping 131 matching lines @@
   base::ListValue* patterns = nullptr;
   dict->GetList(kWhitelistKey, &patterns);
 
   base::ListValue* hostname_hashes = nullptr;
   dict->GetList(kHostnameHashesKey, &hostname_hashes);
 
   callback.Run(make_scoped_refptr(
       new SupervisedUserSiteList(id, title, GURL(entry_point_url),
                                  large_icon_path, patterns, hostname_hashes)));
 }