fixed VP8 simulcast to not decode non-selected streams

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..c2ab56fa002f93e9a1b4de32dcba1cc1e4a5e10a 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::set<uint32_t> &excluded_ssrcs_);
   bool DiscardedLastPacket() const;
   bool SendRtp(const uint8_t* data,
                size_t length,
@@ -41,6 +42,7 @@ class LayerFilteringTransport : public test::DirectTransport {
   // selected one. -1 to disable filtering.
   const int selected_tl_;
   const int selected_sl_;
+  const std::set<uint32_t> excluded_ssrcs_;
   bool discarded_last_packet_;
 };