Keep pool of pre-connected DNS sockets

net/dns/dns_transaction_unittest.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_transaction.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/rand_util.h"
@@ skipping 303 matching lines @@
       config_.nameservers.push_back(IPEndPoint(dns_ip,
                                                dns_protocol::kDefaultPort));
     }
   }
 
   // Called after fully configuring |config|.
   void ConfigureFactory() {
     socket_factory_.reset(new TestSocketFactory());
     session_ = new DnsSession(
         config_,
-        socket_factory_.get(),
+        DnsSocketPool::CreateNull(socket_factory_.get()),
         base::Bind(&DnsTransactionTest::GetNextId, base::Unretained(this)),
         NULL /* NetLog */);
     transaction_factory_ = DnsTransactionFactory::CreateFactory(session_.get());
   }
 
   void AddSocketData(scoped_ptr<DnsSocketData> data) {
     transaction_ids_.push_back(data->query_id());
     socket_factory_->AddSocketDataProvider(data->GetProvider());
     socket_data_.push_back(data.release());
   }
@@ skipping 492 matching lines @@
   socket_factory_->create_failing_sockets_ = true;
   transaction_ids_.push_back(0);  // Needed to make a DnsUDPAttempt.
   TransactionHelper helper0("www.chromium.org", dns_protocol::kTypeA,
                             ERR_CONNECTION_REFUSED);
   EXPECT_TRUE(helper0.Run(transaction_factory_.get()));
 }
 
 }  // namespace
 
 }  // namespace net