chrome: Add out-of-line copy ctors for complex classes.

chrome/browser/supervised_user/supervised_user_site_list.cc

 // 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.
 
 #include "chrome/browser/supervised_user/supervised_user_site_list.h"
 
 #include <algorithm>
 
 #include "base/files/file_util.h"
 #include "base/json/json_file_value_serializer.h"
@@ skipping 53 matching lines @@
   base::SHA1HashBytes(reinterpret_cast<const unsigned char*>(hostname.c_str()),
                       hostname.size(), bytes_.data());
 }
 
 SupervisedUserSiteList::HostnameHash::HostnameHash(
     const std::vector<uint8_t>& bytes) {
   CHECK_GE(bytes.size(), base::kSHA1Length);
   std::copy(bytes.begin(), bytes.end(), bytes_.begin());
 }
 
+SupervisedUserSiteList::HostnameHash::HostnameHash(const HostnameHash& other) =
+    default;
+
 bool SupervisedUserSiteList::HostnameHash::operator==(
     const HostnameHash& rhs) const {
   return bytes_ == rhs.bytes_;
 }
 
 size_t SupervisedUserSiteList::HostnameHash::hash() const {
   // This just returns the first sizeof(size_t) bytes of |bytes_|.
   return *reinterpret_cast<const size_t*>(bytes_.data());
 }
 
@@ skipping 92 matching lines @@
 
   base::ListValue* patterns = nullptr;
   dict->GetList(kWhitelistKey, &patterns);
 
   base::ListValue* hostname_hashes = nullptr;
   dict->GetList(kHostnameHashesKey, &hostname_hashes);
 
   callback.Run(make_scoped_refptr(new SupervisedUserSiteList(
       id, title, GURL(entry_point_url), patterns, hostname_hashes)));
 }