RefCounted types should not have public destructors

net/base/tcp_listen_socket.h

 // 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.
 
 #ifndef NET_BASE_TCP_LISTEN_SOCKET_H_
 #define NET_BASE_TCP_LISTEN_SOCKET_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "net/base/net_export.h"
 #include "net/base/stream_listen_socket.h"
 
 namespace net {
 
 // Implements a TCP socket. Note that this is ref counted.
 class NET_EXPORT TCPListenSocket : public StreamListenSocket {
  public:
   // Listen on port for the specified IP address.  Use 127.0.0.1 to only
   // accept local connections.
   static scoped_refptr<TCPListenSocket> CreateAndListen(
       const std::string& ip, int port, StreamListenSocket::Delegate* del);
 
-  virtual ~TCPListenSocket();
-
  protected:
   TCPListenSocket(SOCKET s, StreamListenSocket::Delegate* del);
+  virtual ~TCPListenSocket();
 
   static SOCKET CreateAndBind(const std::string& ip, int port);
 
   // Implements StreamListenSocket::Accept.
   virtual void Accept() OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TCPListenSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_TCP_LISTEN_SOCKET_H_