Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/tools/quic/test_tools/quic_client_peer.h

 // Copyright (c) 2013 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_TOOLS_QUIC_TEST_TOOLS_QUIC_CLIENT_PEER_H_
 #define NET_TOOLS_QUIC_TEST_TOOLS_QUIC_CLIENT_PEER_H_
 
+#include "base/basictypes.h"
+
 namespace net {
 
 class QuicCryptoClientConfig;
 
 namespace tools {
 
 class QuicClient;
 
 namespace test {
 
 class QuicClientPeer {
  public:
   static int GetFd(QuicClient* client);
   static QuicCryptoClientConfig* GetCryptoConfig(QuicClient* client);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(QuicClientPeer);
 };
 
 }  // namespace test
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_TEST_TOOLS_QUIC_CLIENT_PEER_H_