Convert FieldTrialList to Accept a std::unique_ptr

chrome/browser/search/instant_unittest_base.cc

 // Copyright 2013 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/search/instant_unittest_base.h"
 
 #include <string>
 
+#include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/instant_service.h"
 #include "chrome/browser/search/instant_service_factory.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/search_engines/ui_thread_search_terms_data.h"
 #include "chrome/test/base/browser_with_test_window_test.h"
 #include "chrome/test/base/search_test_utils.h"
 #include "components/google/core/browser/google_pref_names.h"
 #include "components/google/core/browser/google_url_tracker.h"
 #include "components/search/search.h"
 #include "components/search_engines/template_url.h"
 #include "components/search_engines/template_url_service.h"
 #include "components/variations/entropy_provider.h"
 
 InstantUnitTestBase::InstantUnitTestBase() {
   field_trial_list_.reset(new base::FieldTrialList(
-      new metrics::SHA1EntropyProvider("42")));
+      base::MakeUnique<metrics::SHA1EntropyProvider>("42")));
 }
 
 InstantUnitTestBase::~InstantUnitTestBase() {
 }
 
 void InstantUnitTestBase::SetUp() {
   BrowserWithTestWindowTest::SetUp();
 
   template_url_service_ = TemplateURLServiceFactory::GetForProfile(profile());
   search_test_utils::WaitForTemplateURLServiceToLoad(template_url_service_);
@@ skipping 40 matching lines @@
     const InstantServiceObserver* observer) const {
   return instant_service_->observers_.HasObserver(observer);
 }
 
 TestingProfile* InstantUnitTestBase::CreateProfile() {
   TestingProfile* profile = BrowserWithTestWindowTest::CreateProfile();
   TemplateURLServiceFactory::GetInstance()->SetTestingFactoryAndUse(
       profile, &TemplateURLServiceFactory::BuildInstanceFor);
   return profile;
 }