Convert FieldTrialList to Accept a std::unique_ptr

components/search/search_unittest.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 "components/search/search.h"
 
 #include <memory>
 
+#include "base/memory/ptr_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/statistics_recorder.h"
 #include "build/build_config.h"
 #include "components/variations/entropy_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace search {
 
 class EmbeddedSearchFieldTrialTest : public testing::Test {
  protected:
   void SetUp() override {
     field_trial_list_.reset(new base::FieldTrialList(
-        new metrics::SHA1EntropyProvider("42")));
+        base::MakeUnique<metrics::SHA1EntropyProvider>("42")));
     base::StatisticsRecorder::Initialize();
   }
 
  private:
   std::unique_ptr<base::FieldTrialList> field_trial_list_;
 };
 
 TEST_F(EmbeddedSearchFieldTrialTest, GetFieldTrialInfoEmptyAndValid) {
   FieldTrialFlags flags;
 
@@ skipping 141 matching lines @@
 TEST_F(InstantExtendedEnabledParamTest, UseDefaultEmbeddedSearchPageVersion) {
   ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial(
       "EmbeddedSearch", "Group1 espv:-1"));
   EXPECT_EQ("", InstantExtendedEnabledParam(true));
   EXPECT_EQ("espv=2&", InstantExtendedEnabledParam(false));
 }
 
 #endif  // !defined(OS_IOS) && !defined(OS_ANDROID)
 
 }  // namespace search