Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/quic/crypto/chacha20_poly1305_encrypter.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_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_
 #define NET_QUIC_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_
 
 #include "net/quic/crypto/aead_base_encrypter.h"
 
 namespace net {
@@ skipping 19 matching lines @@
   static bool IsSupported();
 
 #if !defined(USE_OPENSSL)
  protected:
   // AeadBaseEncrypter methods:
   virtual void FillAeadParams(base::StringPiece nonce,
                               base::StringPiece associated_data,
                               size_t auth_tag_size,
                               AeadParams* aead_params) const OVERRIDE;
 #endif
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChaCha20Poly1305Encrypter);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_