Update from https://crrev.com/305340

net/tools/gdig/gdig.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 <stdio.h>
 #include <string>
 
 #include "base/at_exit.h"
+#include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/cancelable_callback.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 27 matching lines @@
   int port;
   if (!ParseHostAndPort(ip_address_and_port, &ip, &port))
     return false;
   if (port == -1)
     port = dns_protocol::kDefaultPort;
 
   net::IPAddressNumber ip_number;
   if (!net::ParseIPLiteralToNumber(ip, &ip_number))
     return false;
 
-  *ip_end_point = net::IPEndPoint(ip_number, port);
+  *ip_end_point = net::IPEndPoint(ip_number, static_cast<uint16>(port));
   return true;
 }
 
 // Convert DnsConfig to human readable text omitting the hosts member.
 std::string DnsConfigToString(const DnsConfig& dns_config) {
   std::string output;
   output.append("search ");
   for (size_t i = 0; i < dns_config.search.size(); ++i) {
     output.append(dns_config.search[i] + " ");
   }
@@ skipping 16 matching lines @@
 }
 
 // Convert DnsConfig hosts member to a human readable text.
 std::string DnsHostsToString(const DnsHosts& dns_hosts) {
   std::string output;
   for (DnsHosts::const_iterator i = dns_hosts.begin();
        i != dns_hosts.end();
        ++i) {
     const DnsHostsKey& key = i->first;
     std::string host_name = key.first;
-    output.append(IPEndPoint(i->second, -1).ToStringWithoutPort());
+    output.append(IPEndPoint(i->second, 0).ToStringWithoutPort());
     output.append(" ").append(host_name).append("\n");
   }
   return output;
 }
 
 struct ReplayLogEntry {
   base::TimeDelta start_time;
   std::string domain_name;
 };
 
@@ skipping 403 matching lines @@
 }
 
 }  // empty namespace
 
 }  // namespace net
 
 int main(int argc, const char* argv[]) {
   net::GDig dig;
   return dig.Main(argc, argv);
 }