Making FakeNetworkPipe demux audio and video packets.

webrtc/test/layer_filtering_transport.h

Index: webrtc/test/layer_filtering_transport.h
diff --git a/webrtc/test/layer_filtering_transport.h b/webrtc/test/layer_filtering_transport.h
index 8f8cc2e31349ccb36a1f510dea69e3eb4d6333ee..488f764cda546062469dedfc4e5c930d66bbda2c 100644
--- a/webrtc/test/layer_filtering_transport.h
+++ b/webrtc/test/layer_filtering_transport.h
@@ -27,7 +27,8 @@ class LayerFilteringTransport : public test::DirectTransport {
                           uint8_t vp8_video_payload_type,
                           uint8_t vp9_video_payload_type,
                           int selected_tl,
-                          int selected_sl);
+                          int selected_sl,
+                          const std::map<uint8_t, MediaType>& payload_type_map);
   bool DiscardedLastPacket() const;
   bool SendRtp(const uint8_t* data,
                size_t length,