Support simulcast and spatial layers in VideoQualityTest (PERF NOTE)

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 3f2389a51bf3d2dbc1c7e1a74aaf03528ac12deb..d4535562350e3a798e3eb243ffeac470b723f93c 100644
--- a/webrtc/test/layer_filtering_transport.h
+++ b/webrtc/test/layer_filtering_transport.h
@@ -26,23 +26,22 @@ class LayerFilteringTransport : public test::DirectTransport {
                           Call* send_call,
                           uint8_t vp8_video_payload_type,
                           uint8_t vp9_video_payload_type,
-                          uint8_t tl_discard_threshold,
-                          uint8_t sl_discard_threshold);
+                          int selected_tl,
+                          int selected_sl);
+  bool DiscardedLastPacket() const;
   bool SendRtp(const uint8_t* data,
                size_t length,
                const PacketOptions& options) override;
 
  private:
-  uint16_t NextSequenceNumber(uint32_t ssrc);
   // Used to distinguish between VP8 and VP9.
   const uint8_t vp8_video_payload_type_;
   const uint8_t vp9_video_payload_type_;
-  // Discard all temporal/spatial layers with id greater or equal the
-  // threshold. 0 to disable.
-  const uint8_t tl_discard_threshold_;
-  const uint8_t sl_discard_threshold_;
-  // Current sequence number for each SSRC separately.
-  std::map<uint32_t, uint16_t> current_seq_nums_;
+  // Discard or invalidate all temporal/spatial layers with id greater than the
+  // selected one. -1 to disable filtering.
+  const int selected_tl_;
+  const int selected_sl_;
+  bool discarded_last_packet_;
 };
 
 }  // namespace test