Convert FieldTrialList to Accept a std::unique_ptr

components/variations/variations_seed_processor_unittest.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 "components/variations/variations_seed_processor.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/format_macros.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/string_split.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/mock_entropy_provider.h"
 #include "base/test/scoped_feature_list.h"
 #include "components/variations/processed_study.h"
 #include "components/variations/study_filtering.h"
 #include "components/variations/variations_associated_data.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 830 matching lines @@
   Study* study2 = seed.add_study();
   study2->set_name(kTrial2Name);
   study2->set_consistency(variations::Study_Consistency_PERMANENT);
   study2->set_default_experiment_name(kDefaultName);
   AddExperiment(kGroup1Name, 50, study2);
   AddExperiment(kDefaultName, 50, study2);
   study2->mutable_experiment(0)->set_google_web_experiment_id(kExperimentId);
 
   // An entorpy value of 0.1 will cause the AA group to be chosen, since AA is
   // the only non-default group, and has a probability percent above 0.1.
-  base::MockEntropyProvider* mock_high_entropy_provider =
-      new base::MockEntropyProvider(0.1);
-
-  // The field trial list takes ownership of the provider.
-  base::FieldTrialList field_trial_list(mock_high_entropy_provider);
+  base::FieldTrialList field_trial_list(
+      base::MakeUnique<base::MockEntropyProvider>(0.1));
 
   // Use a stack instance, since nothing takes ownership of this provider.
   // This entropy value will cause the default group to be chosen since it's a
   // 50/50 trial.
   base::MockEntropyProvider mock_low_entropy_provider(0.9);
 
   EXPECT_TRUE(CreateTrialFromStudyWithEntropyOverride(
       *study1, &mock_low_entropy_provider));
   EXPECT_TRUE(CreateTrialFromStudyWithEntropyOverride(
       *study2, &mock_low_entropy_provider));
 
   // Since no experiment in study1 sends experiment IDs, it will use the high
   // entropy provider, which selects the non-default group.
   EXPECT_EQ(kGroup1Name, base::FieldTrialList::FindFullName(kTrial1Name));
 
   // Since an experiment in study2 has google_web_experiment_id set, it will use
   // the low entropy provider, which selects the default group.
   EXPECT_EQ(kDefaultName, base::FieldTrialList::FindFullName(kTrial2Name));
 }
 
 }  // namespace variations