Remove ListValue::Append(new {Fundamental,String}Value(...)) pattern in //net

net/cert/x509_certificate_net_log_param.cc

 // Copyright (c) 2012 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 "net/cert/x509_certificate_net_log_param.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/values.h"
 #include "net/cert/x509_certificate.h"
 
 namespace net {
 
 std::unique_ptr<base::Value> NetLogX509CertificateCallback(
     const X509Certificate* certificate,
     NetLogCaptureMode capture_mode) {
   std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
   std::unique_ptr<base::ListValue> certs(new base::ListValue());
   std::vector<std::string> encoded_chain;
   certificate->GetPEMEncodedChain(&encoded_chain);
   for (size_t i = 0; i < encoded_chain.size(); ++i)
-    certs->Append(new base::StringValue(encoded_chain[i]));
+    certs->AppendString(encoded_chain[i]);
   dict->Set("certificates", std::move(certs));
   return std::move(dict);
 }
 
 }  // namespace net