Add a SetDoNotFragment() method to DatagramSocket, and call this for

net/socket/socks5_client_socket.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/socket/socks5_client_socket.h"
 
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/compiler_specific.h"
@@ skipping 171 matching lines @@
 }
 
 int SOCKS5ClientSocket::SetReceiveBufferSize(int32_t size) {
   return transport_->socket()->SetReceiveBufferSize(size);
 }
 
 int SOCKS5ClientSocket::SetSendBufferSize(int32_t size) {
   return transport_->socket()->SetSendBufferSize(size);
 }
 
+int SOCKS5ClientSocket::SetDoNotFragment(bool do_not_fragment) {
+  return transport_->socket()->SetDoNotFragment(do_not_fragment);
+}
+
 void SOCKS5ClientSocket::DoCallback(int result) {
   DCHECK_NE(ERR_IO_PENDING, result);
   DCHECK(!user_callback_.is_null());
 
   // Since Run() may result in Read being called,
   // clear user_callback_ up front.
   base::ResetAndReturn(&user_callback_).Run(result);
 }
 
 void SOCKS5ClientSocket::OnIOComplete(int result) {
@@ skipping 293 matching lines @@
 
 int SOCKS5ClientSocket::GetPeerAddress(IPEndPoint* address) const {
   return transport_->socket()->GetPeerAddress(address);
 }
 
 int SOCKS5ClientSocket::GetLocalAddress(IPEndPoint* address) const {
   return transport_->socket()->GetLocalAddress(address);
 }
 
 }  // namespace net