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

net/http/http_request_headers.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/http/http_request_headers.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/strings/string_split.h"
@@ skipping 179 matching lines @@
 std::unique_ptr<base::Value> HttpRequestHeaders::NetLogCallback(
     const std::string* request_line,
     NetLogCaptureMode capture_mode) const {
   std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
   dict->SetString("line", *request_line);
   base::ListValue* headers = new base::ListValue();
   for (HeaderVector::const_iterator it = headers_.begin();
        it != headers_.end(); ++it) {
     std::string log_value =
         ElideHeaderValueForNetLog(capture_mode, it->key, it->value);
-    headers->Append(new base::StringValue(
-        base::StringPrintf("%s: %s",
-                           it->key.c_str(), log_value.c_str())));
+    headers->AppendString(
+        base::StringPrintf("%s: %s", it->key.c_str(), log_value.c_str()));
   }
   dict->Set("headers", headers);
   return std::move(dict);
 }
 
 // static
 bool HttpRequestHeaders::FromNetLogParam(const base::Value* event_param,
                                          HttpRequestHeaders* headers,
                                          std::string* request_line) {
   headers->Clear();
@@ skipping 39 matching lines @@
   for (HeaderVector::const_iterator it = headers_.begin();
        it != headers_.end(); ++it) {
     if (base::EqualsCaseInsensitiveASCII(key, it->key))
       return it;
   }
 
   return headers_.end();
 }
 
 }  // namespace net