Revert of Move RtcEventLog object from inside VoiceEngine to Call.

webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc

Index: webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc b/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc
index 1c878b9f158a8cd7626f808a43e2b7bd179268e2..e2d3da9632adf04b67f32434c4e43244a3d530fb 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc
+++ b/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc
@@ -25,9 +25,7 @@
 
 RembBweSender::RembBweSender(int kbps, BitrateObserver* observer, Clock* clock)
     : bitrate_controller_(
-          BitrateController::CreateBitrateController(clock,
-                                                     observer,
-                                                     &event_log_)),
+          BitrateController::CreateBitrateController(clock, observer)),
       feedback_observer_(bitrate_controller_->CreateRtcpBandwidthObserver()),
       clock_(clock) {
   assert(kbps >= kMinBitrateKbps);