Remove base::Value::CreateNullValue

chrome/browser/policy/test/local_policy_test_server.cc

 // Copyright (c) 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 "chrome/browser/policy/test/local_policy_test_server.h"
 
 #include <ctype.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/files/file_util.h"
 #include "base/json/json_writer.h"
+#include "base/memory/ptr_util.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
 #include "crypto/rsa_private_key.h"
 #include "net/test/python_utils.h"
 
 namespace policy {
@@ skipping 212 matching lines @@
 bool LocalPolicyTestServer::GenerateAdditionalArguments(
     base::DictionaryValue* arguments) const {
   if (!net::LocalTestServer::GenerateAdditionalArguments(arguments))
     return false;
 
   arguments->SetString("config-file", config_file_.AsUTF8Unsafe());
   if (!policy_key_.empty())
     arguments->SetString("policy-key", policy_key_.AsUTF8Unsafe());
   if (automatic_rotation_of_signing_keys_enabled_) {
     arguments->Set("rotate-policy-keys-automatically",
-                   base::Value::CreateNullValue());
+                   base::MakeUnique<base::Value>());
   }
   if (server_data_dir_.IsValid()) {
     arguments->SetString("data-dir", server_data_dir_.GetPath().AsUTF8Unsafe());
 
     if (!clients_.empty()) {
       std::string json;
       base::JSONWriter::Write(clients_, &json);
       base::FilePath client_state_file =
           server_data_dir_.GetPath().Append(kClientStateFileName);
       if (base::WriteFile(client_state_file, json.c_str(), json.size()) !=
@@ skipping 10 matching lines @@
 std::string LocalPolicyTestServer::GetSelector(const std::string& type,
                                                const std::string& entity_id) {
   std::string selector = type;
   if (!entity_id.empty())
     selector = base::StringPrintf("%s/%s", type.c_str(), entity_id.c_str());
   std::replace_if(selector.begin(), selector.end(), IsUnsafeCharacter, '_');
   return selector;
 }
 
 }  // namespace policy