Send multiple queries when DiscoverNewServices is called on a service watcher

chrome/utility/local_discovery/service_discovery_client_unittest.cc

 // Copyright 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 "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
 #include "chrome/utility/local_discovery/service_discovery_client_impl.h"
 #include "net/base/net_errors.h"
 #include "net/dns/dns_protocol.h"
 #include "net/dns/mdns_client_impl.h"
@@ skipping 227 matching lines @@
 
   scoped_ptr<ServiceWatcher> watcher(
       service_discovery_client_.CreateServiceWatcher(
           "_privet._tcp.local", delegate.GetCallback()));
 
   watcher->Start();
 
   EXPECT_CALL(socket_factory_, OnSendTo(_)).Times(2);
 
   watcher->DiscoverNewServices(false);
+
+  EXPECT_CALL(socket_factory_, OnSendTo(_)).Times(2);
+
+  RunFor(base::TimeDelta::FromSeconds(2));
 };
 
 TEST_F(ServiceDiscoveryTest, ReadCachedServices) {
   socket_factory_.SimulateReceive(kSamplePacketPTR, sizeof(kSamplePacketPTR));
 
   StrictMock<MockServiceWatcherClient> delegate;
 
   scoped_ptr<ServiceWatcher> watcher(
       service_discovery_client_.CreateServiceWatcher(
           "_privet._tcp.local", delegate.GetCallback()));
@@ skipping 189 matching lines @@
                          ServiceResolver::STATUS_REQUEST_TIMEOUT, _, _, _));
 
   // TODO(noamsml): When NSEC record support is added, change this to use an
   // NSEC record.
   RunFor(base::TimeDelta::FromSeconds(4));
 };
 
 }  // namespace
 
 }  // namespace local_discovery