Move TestingPrefService to use unique_ptr<Value>

components/search_engines/search_engines_test_util.cc

 // Copyright 2017 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 "components/search_engines/search_engines_test_util.h"
 
+#include <utility>
+
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/search_engines/default_search_manager.h"
 #include "components/search_engines/template_url.h"
 #include "components/search_engines/template_url_data.h"
 #include "components/search_engines/template_url_data_util.h"
 #include "components/sync_preferences/testing_pref_service_syncable.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 42 matching lines @@
       actual->search_terms_replacement_key));
 }
 
 void SetExtensionDefaultSearchInPrefs(
     sync_preferences::TestingPrefServiceSyncable* prefs,
     const TemplateURLData& data) {
   std::unique_ptr<base::DictionaryValue> entry =
       TemplateURLDataToDictionary(data);
   prefs->SetExtensionPref(
       DefaultSearchManager::kDefaultSearchProviderDataPrefName,
-      entry.release());
+      std::move(entry));
 }
 
 void RemoveExtensionDefaultSearchFromPrefs(
     sync_preferences::TestingPrefServiceSyncable* prefs) {
   prefs->RemoveExtensionPref(
       DefaultSearchManager::kDefaultSearchProviderDataPrefName);
 }