Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/quic/quic_ack_notifier.h

 // Copyright 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_QUIC_QUIC_ACK_NOTIFIER_H_
 #define NET_QUIC_QUIC_ACK_NOTIFIER_H_
 
 #include "base/memory/ref_counted.h"
 #include "net/quic/quic_protocol.h"
 
@@ skipping 74 matching lines @@
 
   // Transmission and retransmission stats.
   // Number of packets in the original transmission.
   int original_packet_count_;
   // Number of packets in the original transmission.
   int original_byte_count_;
   // Number of packets that had to be retransmitted.
   int retransmitted_packet_count_;
   // Number of bytes that had to be retransmitted.
   int retransmitted_byte_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(QuicAckNotifier);
 };
 
 };  // namespace net
 
 #endif  // NET_QUIC_QUIC_ACK_NOTIFIER_H_