Avoid loading ws2_32.dll just to get htons() and friends.

net/base/net_util.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/base/net_util.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 
@@ skipping 30 matching lines @@
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_piece.h"
 #include "base/string_split.h"
 #include "base/string_tokenizer.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/synchronization/lock.h"
 #include "base/sys_string_conversions.h"
+#include "base/sys_byteorder.h"
 #include "base/time.h"
 #include "base/utf_offset_string_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
 #include "googleurl/src/url_canon.h"
 #include "googleurl/src/url_canon_ip.h"
 #include "googleurl/src/url_parse.h"
 #include "grit/net_resources.h"
 #include "net/base/dns_util.h"
 #include "net/base/escape.h"
 #include "net/base/mime_util.h"
 #include "net/base/net_module.h"
 #if defined(OS_WIN)
 #include "net/base/winsock_init.h"
 #endif
 #include "net/http/http_content_disposition.h"
 #include "unicode/datefmt.h"
 #include "unicode/regex.h"
 #include "unicode/ucnv.h"
 #include "unicode/uidna.h"
 #include "unicode/ulocdata.h"
 #include "unicode/uniset.h"
 #include "unicode/uscript.h"
 #include "unicode/uset.h"
 
 using base::Time;
 
+#if defined(OS_WIN)
+// Allow htons/ntohs to be called without requiring ws2_32.dll to be loaded,
+// which isn't available in Chrome's sandbox. See crbug.com/116591.
+#define ntohs(x) _byteswap_ushort(x)
+#define htons(x) _byteswap_ushort(x)
+#endif // OS_WIN
+
 namespace net {
 
 namespace {
 
 // what we prepend to get a file URL
 static const FilePath::CharType kFileURLPrefix[] =
     FILE_PATH_LITERAL("file:///");
 
 // The general list of blocked ports. Will be blocked unless a specific
 // protocol overrides it. (Ex: ftp can use ports 20 and 21)
@@ skipping 2315 matching lines @@
 
 NetworkInterface::NetworkInterface(const std::string& name,
                                    const IPAddressNumber& address)
     : name(name), address(address) {
 }
 
 NetworkInterface::~NetworkInterface() {
 }
 
 }  // namespace net