Added PrivetHTTPResolution::Start for service name only

chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.cc

Index: chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.cc
diff --git a/chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.cc b/chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.cc
index bb9a43e17f058a9e93efc165a5a5ae9051890ce9..50428804da6382d2950e619f3859134638a64c7e 100644
--- a/chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.cc
+++ b/chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.cc
@@ -59,6 +59,24 @@ PrivetHTTPAsynchronousFactoryImpl::ResolutionImpl::GetName() {
 }
 
 void PrivetHTTPAsynchronousFactoryImpl::ResolutionImpl::Start(
+    const ResultCallback& callback) {
+  service_resolver_ = service_discovery_client_->CreateServiceResolver(
+      name_, base::Bind(&ResolutionImpl::ServiceResolveComplete,
+                        base::Unretained(this), callback));
+  service_resolver_->StartResolving();
+}
+
+void PrivetHTTPAsynchronousFactoryImpl::ResolutionImpl::ServiceResolveComplete(
+    const ResultCallback& callback,
+    ServiceResolver::RequestStatus result,
+    const ServiceDescription& description) {
+  if (result != ServiceResolver::STATUS_SUCCESS)
+    return callback.Run(scoped_ptr<PrivetHTTPClient>());
+
+  Start(description.address, callback);
+}
+
+void PrivetHTTPAsynchronousFactoryImpl::ResolutionImpl::Start(
     const net::HostPortPair& address,
     const ResultCallback& callback) {
 #if defined(OS_MACOSX)