Instantly pass network changes to controllers in audio network adaptor.

webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h

Index: webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h b/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
index ac4b1e236a0fc45bff517061613dd9d77b0d8ada..8d9cbb03f9cf590d7d7e235b25fdcc2213ca2af8 100644
--- a/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
@@ -64,16 +64,17 @@ class FecController final : public Controller {
     const Clock* clock;
   };
 
-  explicit FecController(const Config& config);
-
   // Dependency injection for testing.
   FecController(const Config& config,
                 std::unique_ptr<SmoothingFilter> smoothing_filter);
 
+  explicit FecController(const Config& config);
+
   ~FecController() override;
 
-  void MakeDecision(const NetworkMetrics& metrics,
-                    AudioNetworkAdaptor::EncoderRuntimeConfig* config) override;
+  void UpdateNetworkMetrics(const NetworkMetrics& network_metrics) override;
+
+  void MakeDecision(AudioNetworkAdaptor::EncoderRuntimeConfig* config) override;
 
  private:
   // Characterize Threshold with packet_loss = slope * bandwidth + offset.
@@ -87,14 +88,13 @@ class FecController final : public Controller {
                                const Config::Threshold& threshold,
                                const ThresholdInfo& threshold_info) const;
 
-  bool FecEnablingDecision(const NetworkMetrics& metrics,
-                           const rtc::Optional<float>& packet_loss) const;
-  bool FecDisablingDecision(const NetworkMetrics& metrics,
-                            const rtc::Optional<float>& packet_loss) const;
+  bool FecEnablingDecision(const rtc::Optional<float>& packet_loss) const;
+  bool FecDisablingDecision(const rtc::Optional<float>& packet_loss) const;
 
   const Config config_;
   bool fec_enabled_;
-  std::unique_ptr<SmoothingFilter> packet_loss_smoothed_;
+  rtc::Optional<int> uplink_bandwidth_bps_;
+  const std::unique_ptr<SmoothingFilter> packet_loss_smoother_;
 
   const ThresholdInfo fec_enabling_threshold_info_;
   const ThresholdInfo fec_disabling_threshold_info_;