Remove SendPacer from ViEEncoder

webrtc/modules/bitrate_controller/bitrate_controller_impl.h

Index: webrtc/modules/bitrate_controller/bitrate_controller_impl.h
diff --git a/webrtc/modules/bitrate_controller/bitrate_controller_impl.h b/webrtc/modules/bitrate_controller/bitrate_controller_impl.h
index a9661212d16f4ec6009e2c36a0274147b1e3ceca..48fb11feee22d72fa4d207e5511e7cc764c111bc 100644
--- a/webrtc/modules/bitrate_controller/bitrate_controller_impl.h
+++ b/webrtc/modules/bitrate_controller/bitrate_controller_impl.h
@@ -50,6 +50,11 @@ class BitrateControllerImpl : public BitrateController {
 
   void SetEventLog(RtcEventLog* event_log) override;
 
+  // Returns true if the parameters have changed since the last call.
+  bool GetNetworkParameters(uint32_t* bitrate,
+                            uint8_t* fraction_loss,
+                            int64_t* rtt) override;
+
   int64_t TimeUntilNextProcess() override;
   void Process() override;
 
@@ -66,18 +71,13 @@ class BitrateControllerImpl : public BitrateController {
 
   void MaybeTriggerOnNetworkChanged();
 
-  // Returns true if the parameters have changed since the last call.
-  bool GetNetworkParameters(uint32_t* bitrate,
-                            uint8_t* fraction_loss,
-                            int64_t* rtt);
-
   void OnNetworkChanged(uint32_t bitrate,
                         uint8_t fraction_loss,  // 0 - 255.
                         int64_t rtt) EXCLUSIVE_LOCKS_REQUIRED(critsect_);
 
   // Used by process thread.
-  Clock* clock_;
-  BitrateObserver* observer_;
+  Clock* const clock_;
+  BitrateObserver* const observer_;
   int64_t last_bitrate_update_ms_;
 
   rtc::CriticalSection critsect_;