Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/quic/test_tools/quic_config_peer.h

 // Copyright 2014 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_QUIC_TEST_TOOLS_QUIC_CONFIG_PEER_H_
 #define NET_QUIC_TEST_TOOLS_QUIC_CONFIG_PEER_H_
 
 #include "net/quic/quic_protocol.h"
 
 namespace net {
 
 class QuicConfig;
 
 namespace test {
 
 class QuicConfigPeer {
  public:
   static void SetReceivedInitialWindow(QuicConfig* config,
                                        size_t initial_window);
 
   static void SetReceivedLossDetection(QuicConfig* config,
                                        QuicTag loss_detection);
 
   static void SetReceivedInitialFlowControlWindow(QuicConfig* config,
                                                   uint32 window_bytes);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(QuicConfigPeer);
 };
 
 }  // namespace test
 
 }  // namespace net
 
 #endif  // NET_QUIC_TEST_TOOLS_QUIC_CONFIG_PEER_H_