Move RtcEventLog object from inside VoiceEngine to Call.

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

Index: webrtc/modules/remote_bitrate_estimator/test/estimators/remb.h
diff --git a/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.h b/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.h
index 5e6b6edb25660fc6a7cd1287dcfdf4e732a5942a..1ee5030680202edd3de08573bac192153a8100d5 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.h
+++ b/webrtc/modules/remote_bitrate_estimator/test/estimators/remb.h
@@ -15,6 +15,7 @@
 #include <string>
 #include <vector>
 
+#include "webrtc/call/mock/mock_rtc_event_log.h"
 #include "webrtc/modules/remote_bitrate_estimator/test/bwe.h"
 
 namespace webrtc {
@@ -44,6 +45,7 @@ class RembBweSender : public BweSender {
 
  private:
   Clock* clock_;
+  MockRtcEventLog event_log_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(RembBweSender);
 };