Move RtcpStatistics from common_types.h to a new header file

New location is modules/rtp_rtcp/include/rtcp_statistics.h.

Bug: webrtc:5876
Change-Id: I85f55b58658588228ed77175226b3479352fd5de
Reviewed-on: https://webrtc-review.googlesource.com/c/111961
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25799}
diff --git a/call/video_receive_stream.h b/call/video_receive_stream.h
index 94cbfcc..2cd5f16 100644
--- a/call/video_receive_stream.h
+++ b/call/video_receive_stream.h
@@ -26,6 +26,7 @@
 #include "api/video/video_timing.h"
 #include "api/video_codecs/sdp_video_format.h"
 #include "call/rtp_config.h"
+#include "modules/rtp_rtcp/include/rtcp_statistics.h"
 #include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 
 namespace webrtc {