Make DiversificationNonce a std::array

net/quic/core/quic_connection.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.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 553 matching lines @@
   // connection becomes forward secure and hasn't received acks for all packets.
   void NeuterUnencryptedPackets();
 
   // Changes the encrypter used for level |level| to |encrypter|. The function
   // takes ownership of |encrypter|.
   void SetEncrypter(EncryptionLevel level, QuicEncrypter* encrypter);
 
   // SetNonceForPublicHeader sets the nonce that will be transmitted in the
   // public header of each packet encrypted at the initial encryption level
   // decrypted. This should only be called on the server side.
-  void SetDiversificationNonce(const DiversificationNonce nonce);
+  void SetDiversificationNonce(const DiversificationNonce& nonce);
 
   // SetDefaultEncryptionLevel sets the encryption level that will be applied
   // to new packets.
   void SetDefaultEncryptionLevel(EncryptionLevel level);
 
   // SetDecrypter sets the primary decrypter, replacing any that already exists,
   // and takes ownership. If an alternative decrypter is in place then the
   // function DCHECKs. This is intended for cases where one knows that future
   // packets will be using the new decrypter and the previous decrypter is now
   // obsolete. |level| indicates the encryption level of the new decrypter.
@@ skipping 518 matching lines @@
   // Indicates whether a write error is encountered currently. This is used to
   // avoid infinite write errors.
   bool write_error_occured_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_