Convert FieldTrialList to Accept a std::unique_ptr

components/omnibox/browser/omnibox_field_trial_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/omnibox_field_trial.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "components/metrics/proto/omnibox_event.pb.h"
 #include "components/search/search.h"
 #include "components/variations/entropy_provider.h"
 #include "components/variations/variations_associated_data.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using metrics::OmniboxEventProto;
 
 class OmniboxFieldTrialTest : public testing::Test {
  public:
   OmniboxFieldTrialTest() {
     ResetFieldTrialList();
   }
 
   void 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();
   }
 
   // Creates and activates a field trial.
   static base::FieldTrial* CreateTestTrial(const std::string& name,
                                            const std::string& group_name) {
     base::FieldTrial* trial = base::FieldTrialList::CreateFieldTrial(
         name, group_name);
     trial->group();
     return trial;
@@ skipping 461 matching lines @@
       NULL, NULL, false,
       OmniboxFieldTrial::kDefaultMinimumTimeBetweenSuggestQueriesMs);
 
   // Valid params.
   VerifySuggestPollingStrategy("true", "50", true, 50);
   VerifySuggestPollingStrategy(NULL, "35", false, 35);
   VerifySuggestPollingStrategy(
       "true", NULL, true,
       OmniboxFieldTrial::kDefaultMinimumTimeBetweenSuggestQueriesMs);
 }