Add network cost as part of the connection comparison.

talk/app/webrtc/java/jni/androidnetworkmonitor_jni.cc

Index: talk/app/webrtc/java/jni/androidnetworkmonitor_jni.cc
diff --git a/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.cc b/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.cc
index 071ba45911d66e2a6ca18876a39783a171b214da..acd6dd8343ad1a8ecd9b9d020bd10c730cdb6087 100644
--- a/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.cc
+++ b/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.cc
@@ -330,6 +330,7 @@ rtc::AdapterType AndroidNetworkMonitor::GetAdapterType(
     const std::string& if_name) {
   auto iter = adapter_type_by_name_.find(if_name);
   if (iter == adapter_type_by_name_.end()) {
+    LOG(LS_WARNING) << "Get adapter type for an unknown interface: " << if_name;
     return rtc::ADAPTER_TYPE_UNKNOWN;
   }
   return iter->second;