Add the ability for DevTools to wrap network transactions.

net/quic/quic_stream_factory.h

Index: net/quic/quic_stream_factory.h
diff --git a/net/quic/quic_stream_factory.h b/net/quic/quic_stream_factory.h
index 97da453480509b3915f3fd0f08bd7e92c53795aa..e949a47ce8f3112adf8e782c542dee27478b9718 100644
--- a/net/quic/quic_stream_factory.h
+++ b/net/quic/quic_stream_factory.h
@@ -158,6 +158,10 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
 
   bool enable_port_selection() const { return enable_port_selection_; }
 
+  bool has_quic_server_info_factory() {
+    return quic_server_info_factory_ != NULL;
+  }
+
   void set_quic_server_info_factory(
       QuicServerInfoFactory* quic_server_info_factory) {
     DCHECK(!quic_server_info_factory_);