Added log messages for important call setup events: first packet sent/received

webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h

Index: webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h b/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
index 5cf94c28595644006d6e1e0a8a29ac0852907f5a..27fae5a013cd3bc8a8ca6f958a8a97d42ac11366 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
@@ -29,7 +29,8 @@ class RtpReceiverImpl : public RtpReceiver {
                   RtpAudioFeedback* incoming_audio_messages_callback,
                   RtpFeedback* incoming_messages_callback,
                   RTPPayloadRegistry* rtp_payload_registry,
-                  RTPReceiverStrategy* rtp_media_receiver);
+                  RTPReceiverStrategy* rtp_media_receiver,
+                  bool is_audio);
 
   virtual ~RtpReceiverImpl();
 
@@ -77,6 +78,7 @@ class RtpReceiverImpl : public RtpReceiver {
   Clock* clock_;
   RTPPayloadRegistry* rtp_payload_registry_;
   rtc::scoped_ptr<RTPReceiverStrategy> rtp_media_receiver_;
+  bool is_audio_;
 
   RtpFeedback* cb_rtp_feedback_;