DNS: Add stubs for persisting data across restarts

net/dns/dns_test_util.cc

 // 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.
 
 #include "net/dns/dns_test_util.h"
 
 #include <string>
 
 #include "base/big_endian.h"
 #include "base/bind.h"
@@ skipping 203 matching lines @@
 }
 
 DnsTransactionFactory* MockDnsClient::GetTransactionFactory() {
   return config_.IsValid() ? factory_.get() : NULL;
 }
 
 AddressSorter* MockDnsClient::GetAddressSorter() {
   return address_sorter_.get();
 }
 
+void MockDnsClient::ApplyPersistentData(const base::Value& data) {}
+
+std::unique_ptr<const base::Value> MockDnsClient::GetPersistentData() const {
+  return std::unique_ptr<const base::Value>();
+}
+
 void MockDnsClient::CompleteDelayedTransactions() {
   factory_->CompleteDelayedTransactions();
 }
 
 }  // namespace net