Add more out of line copy ctors for complex classes.

net/quic/crypto/quic_compressed_certs_cache.cc

 // Copyright 2016 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 "net/quic/crypto/quic_compressed_certs_cache.h"
 
 namespace net {
 
 namespace {
 
@@ skipping 20 matching lines @@
 QuicCompressedCertsCache::CachedCerts::CachedCerts() {}
 
 QuicCompressedCertsCache::CachedCerts::CachedCerts(
     const UncompressedCerts& uncompressed_certs,
     const string& compressed_cert)
     : chain_(uncompressed_certs.chain),
       client_common_set_hashes_(*uncompressed_certs.client_common_set_hashes),
       client_cached_cert_hashes_(*uncompressed_certs.client_cached_cert_hashes),
       compressed_cert_(compressed_cert) {}
 
+QuicCompressedCertsCache::CachedCerts::CachedCerts(const CachedCerts& other) =
+    default;
+
 QuicCompressedCertsCache::CachedCerts::~CachedCerts() {}
 
 bool QuicCompressedCertsCache::CachedCerts::MatchesUncompressedCerts(
     const UncompressedCerts& uncompressed_certs) const {
   return (client_common_set_hashes_ ==
               *uncompressed_certs.client_common_set_hashes &&
           client_cached_cert_hashes_ ==
               *uncompressed_certs.client_cached_cert_hashes &&
           chain_ == uncompressed_certs.chain);
 }
@@ skipping 59 matching lines @@
   uint64_t h =
       std::hash<string>()(*uncompressed_certs.client_cached_cert_hashes);
   hash_combine(&hash, h);
 
   hash_combine(&hash,
                reinterpret_cast<uint64_t>(uncompressed_certs.chain.get()));
   return hash;
 }
 
 }  // namespace net