Convert FieldTrialList to Accept a std::unique_ptr

components/omnibox/browser/zero_suggest_provider_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/omnibox/browser/zero_suggest_provider.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 205 matching lines @@
 }
 
 void ZeroSuggestProviderTest::OnProviderUpdate(bool updated_matches) {
 }
 
 void ZeroSuggestProviderTest::ResetFieldTrialList() {
   // Destroy the existing FieldTrialList before creating a new one to avoid
   // a DCHECK.
   field_trial_list_.reset();
   field_trial_list_.reset(new base::FieldTrialList(
-      new metrics::SHA1EntropyProvider("foo")));
+      base::MakeUnique<metrics::SHA1EntropyProvider>("foo")));
   variations::testing::ClearAllVariationParams();
 }
 
 void ZeroSuggestProviderTest::CreatePersonalizedFieldTrial() {
   std::map<std::string, std::string> params;
   params[std::string(OmniboxFieldTrial::kZeroSuggestRule)] = "true";
   params[std::string(OmniboxFieldTrial::kZeroSuggestVariantRule)] =
       "Personalized";
   variations::AssociateVariationParams(
       OmniboxFieldTrial::kBundledExperimentFieldTrialName, "A", params);
@@ skipping 216 matching lines @@
 
   base::RunLoop().RunUntilIdle();
 
   // Expect that the matches have been cleared.
   ASSERT_TRUE(provider_->matches().empty());
 
   // Expect the new results have been stored.
   EXPECT_EQ(empty_response,
             prefs->GetString(omnibox::kZeroSuggestCachedResults));
 }