ARC: Add network GUID to the metadata that is sent to the Host.

components/arc/net/arc_net_host_impl.cc

Index: components/arc/net/arc_net_host_impl.cc
diff --git a/components/arc/net/arc_net_host_impl.cc b/components/arc/net/arc_net_host_impl.cc
index a9d28b80986a9b4a4833f88f83f56b6f8cfa8627..7582d0e5e31d9ca9070b8bac68bda2174d00d89c 100644
--- a/components/arc/net/arc_net_host_impl.cc
+++ b/components/arc/net/arc_net_host_impl.cc
@@ -105,6 +105,11 @@ void ArcNetHostImpl::GetNetworks(GetNetworksRequestType type,
     DCHECK(!tmp.empty());
     wc->ssid = tmp;
 
+    tmp.clear();
+    network_dict->GetString(onc::network_config::kGUID, &tmp);
+    DCHECK(!tmp.empty());
+    wc->guid = tmp;
+
     base::DictionaryValue* wifi_dict = nullptr;
     network_dict->GetDictionary(onc::network_config::kWiFi, &wifi_dict);
     DCHECK(wifi_dict);