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

net/socket/socks_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/socks_client_socket.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 200 matching lines @@
 }
 
 int SOCKSClientSocket::SetReceiveBufferSize(int32_t size) {
   return transport_->socket()->SetReceiveBufferSize(size);
 }
 
 int SOCKSClientSocket::SetSendBufferSize(int32_t size) {
   return transport_->socket()->SetSendBufferSize(size);
 }
 
+int SOCKSClientSocket::SetDoNotFragment(bool do_not_fragment) {
+  return transport_->socket()->SetDoNotFragment(do_not_fragment);
+}
+
 void SOCKSClientSocket::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.
   DVLOG(1) << "Finished setting up SOCKS handshake";
   base::ResetAndReturn(&user_callback_).Run(result);
 }
 
@@ skipping 215 matching lines @@
 
 int SOCKSClientSocket::GetPeerAddress(IPEndPoint* address) const {
   return transport_->socket()->GetPeerAddress(address);
 }
 
 int SOCKSClientSocket::GetLocalAddress(IPEndPoint* address) const {
   return transport_->socket()->GetLocalAddress(address);
 }
 
 }  // namespace net