Convert FieldTrialList to Accept a std::unique_ptr

components/omnibox/browser/autocomplete_result_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/autocomplete_result.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <vector>
@@ skipping 84 matching lines @@
 
     // Duplicate matches.
     std::vector<AutocompleteMatch> duplicate_matches;
   };
 
   AutocompleteResultTest() {
     // 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();
 
     // Create the list of mock providers.  5 is enough.
     for (size_t i = 0; i < 5; ++i) {
       mock_provider_list_.push_back(new MockAutocompleteProvider(
               static_cast<AutocompleteProvider::Type>(i)));
     }
   }
 
   void SetUp() override {
@@ skipping 549 matching lines @@
   matches.clear();
 
   // Case 4: Standalone verbatim match found in AutocompleteResult.
   PopulateAutocompleteMatchesFromTestData(kVerbatimMatches, 1, &matches);
   PopulateAutocompleteMatchesFromTestData(kNonVerbatimMatches, 1, &matches);
   result.AppendMatches(AutocompleteInput(), matches);
   EXPECT_TRUE(result.TopMatchIsStandaloneVerbatimMatch());
   result.Reset();
   matches.clear();
 }