Revert of Move RtcEventLog object from inside VoiceEngine to Call.

webrtc/modules/bitrate_controller/include/bitrate_controller.h

Index: webrtc/modules/bitrate_controller/include/bitrate_controller.h
diff --git a/webrtc/modules/bitrate_controller/include/bitrate_controller.h b/webrtc/modules/bitrate_controller/include/bitrate_controller.h
index f06314cd4ab5cc071abff48acf79b4dfddb90577..4165f066b2f1549bd02a7bfe01768fc43cbf6711 100644
--- a/webrtc/modules/bitrate_controller/include/bitrate_controller.h
+++ b/webrtc/modules/bitrate_controller/include/bitrate_controller.h
@@ -55,11 +55,8 @@
   // TODO(perkj): BitrateObserver has been deprecated and is not used in WebRTC.
   // Remove this method once other other projects does not use it.
   static BitrateController* CreateBitrateController(Clock* clock,
-                                                    BitrateObserver* observer,
-                                                    RtcEventLog* event_log);
-
-  static BitrateController* CreateBitrateController(Clock* clock,
-                                                    RtcEventLog* event_log);
+                                                    BitrateObserver* observer);
+  static BitrateController* CreateBitrateController(Clock* clock);
 
   virtual ~BitrateController() {}
 
@@ -79,6 +76,8 @@
 
   virtual void UpdateDelayBasedEstimate(uint32_t bitrate_bps) = 0;
 
+  virtual void SetEventLog(RtcEventLog* event_log) = 0;
+
   // Gets the available payload bandwidth in bits per second. Note that
   // this bandwidth excludes packet headers.
   virtual bool AvailableBandwidth(uint32_t* bandwidth) const = 0;