Convert FieldTrialList to Accept a std::unique_ptr

components/safe_browsing_db/remote_database_manager_unittest.cc

 // Copyright 2015 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/safe_browsing_db/remote_database_manager.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 11 matching lines @@
  public:
   void StartURLCheck(const URLCheckCallbackMeta& callback,
                      const GURL& url,
                      const std::vector<SBThreatType>& threat_types) override {}
 };
 
 }  // namespace
 
 class RemoteDatabaseManagerTest : public testing::Test {
  protected:
-  RemoteDatabaseManagerTest() : field_trials_(new base::FieldTrialList(NULL)) {}
+  RemoteDatabaseManagerTest()
+      : field_trials_(new base::FieldTrialList(nullptr)) {}
 
   void SetUp() override {
     SafeBrowsingApiHandler::SetInstance(&api_handler_);
     db_ = new RemoteSafeBrowsingDatabaseManager();
   }
 
   // Setup the two field trial params.  These are read in db_'s ctor.
   void SetFieldTrialParams(const std::string types_to_check_val) {
     // Destroy the existing FieldTrialList before creating a new one to avoid
     // a DCHECK.
     field_trials_.reset();
-    field_trials_.reset(new base::FieldTrialList(NULL));
+    field_trials_.reset(new base::FieldTrialList(nullptr));
     variations::testing::ClearAllVariationIDs();
     variations::testing::ClearAllVariationParams();
 
     const std::string group_name = "GroupFoo";  // Value not used
     const std::string experiment_name = "SafeBrowsingAndroid";
     ASSERT_TRUE(
         base::FieldTrialList::CreateFieldTrial(experiment_name, group_name));
 
     std::map<std::string, std::string> params;
     if (!types_to_check_val.empty())
@@ skipping 41 matching lines @@
   EXPECT_TRUE(db_->CanCheckResourceType(content::RESOURCE_TYPE_SUB_FRAME));
   EXPECT_TRUE(db_->CanCheckResourceType(content::RESOURCE_TYPE_STYLESHEET));
   EXPECT_FALSE(db_->CanCheckResourceType(content::RESOURCE_TYPE_SCRIPT));
   EXPECT_FALSE(db_->CanCheckResourceType(content::RESOURCE_TYPE_IMAGE));
   // ...
   EXPECT_FALSE(db_->CanCheckResourceType(content::RESOURCE_TYPE_MEDIA));
   EXPECT_TRUE(db_->CanCheckResourceType(content::RESOURCE_TYPE_WORKER));
 }
 
 }  // namespace safe_browsing