Remove base::Value::CreateNullValue

chrome/browser/ui/webui/supervised_user_internals_message_handler.cc

 // Copyright 2015 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/ui/webui/supervised_user_internals_message_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/account_tracker_service_factory.h"
 #include "chrome/browser/supervised_user/child_accounts/child_account_service.h"
 #include "chrome/browser/supervised_user/supervised_user_service.h"
 #include "chrome/browser/supervised_user/supervised_user_service_factory.h"
@@ skipping 217 matching lines @@
       SupervisedUserSettingsServiceFactory::GetForProfile(profile);
   user_settings_subscription_ = settings_service->Subscribe(base::Bind(
         &SupervisedUserInternalsMessageHandler::SendSupervisedUserSettings,
         weak_factory_.GetWeakPtr()));
 }
 
 void SupervisedUserInternalsMessageHandler::SendSupervisedUserSettings(
     const base::DictionaryValue* settings) {
   web_ui()->CallJavascriptFunctionUnsafe(
       "chrome.supervised_user_internals.receiveUserSettings",
-      *(settings ? settings : base::Value::CreateNullValue().get()));
+      *(settings ? settings : base::MakeUnique<base::Value>().get()));
 }
 
 void SupervisedUserInternalsMessageHandler::OnTryURLResult(
     const std::map<std::string, base::string16>& whitelists,
     SupervisedUserURLFilter::FilteringBehavior behavior,
     supervised_user_error_page::FilteringBehaviorReason reason,
     bool uncertain) {
   std::vector<std::string> whitelists_list;
   for (const auto& whitelist : whitelists) {
     whitelists_list.push_back(
@@ skipping 19 matching lines @@
     supervised_user_error_page::FilteringBehaviorReason reason,
     bool uncertain) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   base::DictionaryValue result;
   result.SetString("url", url.possibly_invalid_spec());
   result.SetString("result", FilteringBehaviorToString(behavior, uncertain));
   result.SetString("reason", FilteringBehaviorReasonToString(reason));
   web_ui()->CallJavascriptFunctionUnsafe(
       "chrome.supervised_user_internals.receiveFilteringResult", result);
 }