Make DiversificationNonce a std::array

net/quic/core/crypto/aead_base_decrypter.cc

 // 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.
 
 #include <openssl/err.h>
 #include <openssl/evp.h>
 
 #include <memory>
 
 #include "net/quic/core/crypto/aead_base_decrypter.h"
@@ skipping 75 matching lines @@
 }
 
 bool AeadBaseDecrypter::SetPreliminaryKey(StringPiece key) {
   DCHECK(!have_preliminary_key_);
   SetKey(key);
   have_preliminary_key_ = true;
 
   return true;
 }
 
-bool AeadBaseDecrypter::SetDiversificationNonce(DiversificationNonce nonce) {
+bool AeadBaseDecrypter::SetDiversificationNonce(
+    const DiversificationNonce& nonce) {
   if (!have_preliminary_key_) {
     return true;
   }
 
   string key, nonce_prefix;
   DiversifyPreliminaryKey(
       StringPiece(reinterpret_cast<const char*>(key_), key_size_),
       StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
                   nonce_prefix_size_),
       nonce, key_size_, nonce_prefix_size_, &key, &nonce_prefix);
@@ skipping 51 matching lines @@
 
 StringPiece AeadBaseDecrypter::GetNoncePrefix() const {
   if (nonce_prefix_size_ == 0) {
     return StringPiece();
   }
   return StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
                      nonce_prefix_size_);
 }
 
 }  // namespace net