Fixes a bug which incorrectly logs incoming RTCP as outgoing.

Adds logging to RTPSender and RTCPSender, pushing an event log pointer from Channel through ModuleRtpRtcpImpl to the Sender objects.

BUG=webrtc:4741

Review URL: https://codereview.webrtc.org/1571283002

Cr-Commit-Position: refs/heads/master@{#11336}
diff --git a/webrtc/modules/rtp_rtcp/include/rtp_rtcp.h b/webrtc/modules/rtp_rtcp/include/rtp_rtcp.h
index 6a7022a..d9d03e6 100644
--- a/webrtc/modules/rtp_rtcp/include/rtp_rtcp.h
+++ b/webrtc/modules/rtp_rtcp/include/rtp_rtcp.h
@@ -24,6 +24,8 @@
 class RemoteBitrateEstimator;
 class RtpReceiver;
 class Transport;
+class RtcEventLog;
+
 namespace rtcp {
 class TransportFeedback;
 }
@@ -73,6 +75,9 @@
     BitrateStatisticsObserver* send_bitrate_observer;
     FrameCountObserver* send_frame_count_observer;
     SendSideDelayObserver* send_side_delay_observer;
+    RtcEventLog* event_log;
+
+    RTC_DISALLOW_COPY_AND_ASSIGN(Configuration);
   };
 
   /*