Net: Add NET_API to the UDP code.

net/udp/udp_server_socket.h

 // Copyright (c) 2011 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.
 
 #ifndef NET_SOCKET_UDP_SERVER_SOCKET_H_
 #define NET_SOCKET_UDP_SERVER_SOCKET_H_
 #pragma once
 
 #include "net/base/completion_callback.h"
 #include "net/udp/datagram_server_socket.h"
 #include "net/udp/udp_socket.h"
 
 namespace net {
 
 class IPEndPoint;
 class BoundNetLog;
 
 // A client socket that uses UDP as the transport layer.
-class UDPServerSocket : public DatagramServerSocket {
+class NET_API UDPServerSocket : public DatagramServerSocket {
  public:
   UDPServerSocket(net::NetLog* net_log,
                   const net::NetLog::Source& source);
   virtual ~UDPServerSocket();
 
   // Implement DatagramServerSocket:
   virtual int Listen(const IPEndPoint& address);
   virtual int RecvFrom(IOBuffer* buf,
                        int buf_len,
                        IPEndPoint* address,
                        CompletionCallback* callback);
   virtual int SendTo(IOBuffer* buf,
                      int buf_len,
                      const IPEndPoint& address,
                      CompletionCallback* callback);
   virtual void Close();
   virtual int GetPeerAddress(IPEndPoint* address) const;
   virtual int GetLocalAddress(IPEndPoint* address) const;
 
  private:
   UDPSocket socket_;
   DISALLOW_COPY_AND_ASSIGN(UDPServerSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_UDP_SERVER_SOCKET_H_