Revert of Change TWCC send interval to reduce overhead on low BW situations.

webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h

Index: webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
diff --git a/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h b/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
index 71099bf9edda366c4a5694f5e15e15c2b0eefb10..127886300d8f95c2fd14d78ebc0ffae9ee5c1094 100644
--- a/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
+++ b/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.h
@@ -47,11 +47,8 @@
   void SetMinBitrate(int min_bitrate_bps) override {}
   int64_t TimeUntilNextProcess() override;
   void Process() override;
-  void OnBitrateChanged(int bitrate);
 
-  static const int kMinSendIntervalMs;
-  static const int kMaxSendIntervalMs;
-  static const int kDefaultSendIntervalMs;
+  static const int kDefaultProcessIntervalMs;
   static const int kBackWindowMs;
 
  private:
@@ -71,7 +68,6 @@
   int64_t window_start_seq_ GUARDED_BY(&lock_);
   // Map unwrapped seq -> time.
   std::map<int64_t, int64_t> packet_arrival_times_ GUARDED_BY(&lock_);
-  int64_t send_interval_ms_ GUARDED_BY(&lock_);
 };
 
 }  // namespace webrtc