Move PrefRegistrySimple to use unique_ptr<Value>

components/network_time/network_time_tracker.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 <stdint.h>
 #include <string>
 #include <utility>
 
 #include "base/i18n/time_formatting.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/rand_util.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/tick_clock.h"
 #include "build/build_config.h"
 #include "components/client_update_protocol/ecdsa.h"
 #include "components/data_use_measurement/core/data_use_user_data.h"
@@ skipping 158 matching lines @@
 
 void RecordFetchValidHistogram(bool valid) {
   UMA_HISTOGRAM_BOOLEAN("NetworkTimeTracker.UpdateTimeFetchValid", valid);
 }
 
 }  // namespace
 
 // static
 void NetworkTimeTracker::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterDictionaryPref(prefs::kNetworkTimeMapping,
-                                   new base::DictionaryValue());
+                                   base::MakeUnique<base::DictionaryValue>());
 }
 
 NetworkTimeTracker::NetworkTimeTracker(
     std::unique_ptr<base::Clock> clock,
     std::unique_ptr<base::TickClock> tick_clock,
     PrefService* pref_service,
     scoped_refptr<net::URLRequestContextGetter> getter)
     : server_url_(kTimeServiceURL),
       max_response_size_(1024),
       backoff_(base::TimeDelta::FromMinutes(kBackoffMinutes)),
@@ skipping 422 matching lines @@
   base::Time network_time;
   if (GetNetworkTime(&network_time, nullptr) != NETWORK_TIME_AVAILABLE) {
     return true;
   }
 
   // Otherwise, make the decision at random.
   return base::RandDouble() < RandomQueryProbability();
 }
 
 }  // namespace network_time