Convert FieldTrialList to Accept a std::unique_ptr

components/network_time/network_time_tracker_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/network_time/network_time_tracker.h"
 
 #include <map>
 #include <memory>
 #include <string>
 #include <utility>
 
 #include "base/compiler_specific.h"
 #include "base/feature_list.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/histogram_tester.h"
 #include "base/test/mock_entropy_provider.h"
 #include "base/test/scoped_feature_list.h"
 #include "base/test/simple_test_clock.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "components/client_update_protocol/ecdsa.h"
 #include "components/network_time/network_time_pref_names.h"
@@ skipping 173 matching lines @@
     // FeatureList.  Don't get confused!  The FieldTrial is reference-counted,
     // and a reference is held by the FieldTrialList.  The FieldTrialList and
     // FeatureList are both singletons.  The authorized way to reset the former
     // for testing is to destruct it (above).  The latter, by contrast, should
     // should already start in a clean state and can be manipulated via the
     // ScopedFeatureList helper class. If this comment was useful to you
     // please send me a postcard.
 
     field_trial_list_.reset();  // Averts a CHECK fail in constructor below.
     field_trial_list_.reset(
-        new base::FieldTrialList(new base::MockEntropyProvider()));
+        new base::FieldTrialList(
+            base::MakeUnique<base::MockEntropyProvider>()));
     // refcounted, and reference held by field_trial_list_.
     base::FieldTrial* trial = base::FieldTrialList::FactoryGetFieldTrial(
         kTrialName, 100, kGroupName, 1971, 1, 1,
         base::FieldTrial::SESSION_RANDOMIZED,
         nullptr /* default_group_number */);
     ASSERT_TRUE(
         variations::AssociateVariationParams(kTrialName, kGroupName, params));
 
     std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
     feature_list->RegisterFieldTrialOverride(
@@ skipping 508 matching lines @@
   tracker_->WaitForFetchForTesting(123123123);
   EXPECT_EQ(NetworkTimeTracker::NETWORK_TIME_AVAILABLE,
             tracker_->GetNetworkTime(&out_network_time, nullptr));
 
   histograms.ExpectTotalCount(kFetchFailedHistogram, 1);
   histograms.ExpectTotalCount(kFetchValidHistogram, 1);
   histograms.ExpectBucketCount(kFetchValidHistogram, true, 1);
 }
 
 }  // namespace network_time