Reverse |rtx_payload_types| map, and rename.

webrtc/video/rtp_video_stream_receiver.cc

Index: webrtc/video/rtp_video_stream_receiver.cc
diff --git a/webrtc/video/rtp_video_stream_receiver.cc b/webrtc/video/rtp_video_stream_receiver.cc
index 6064e6971557932d3cd8ffea8bb6cf680ca68af4..d0490a6c8b5a773b2659cde4ccd8b927ae44a167 100644
--- a/webrtc/video/rtp_video_stream_receiver.cc
+++ b/webrtc/video/rtp_video_stream_receiver.cc
@@ -148,9 +148,9 @@ RtpVideoStreamReceiver::RtpVideoStreamReceiver(
   if (config_.rtp.rtx_ssrc) {
     rtp_payload_registry_.SetRtxSsrc(config_.rtp.rtx_ssrc);
 
-    for (const auto& kv : config_.rtp.rtx_payload_types) {
+    for (const auto& kv : config_.rtp.media_pt_by_rtx_pt) {
       RTC_DCHECK(kv.second != 0);

[danilchap, 2017/08/21 14:11:26]

change DCHECK to validate rtx payload type (media payload type 0 is common for
audio)

[nisse-webrtc, 2017/08/22 07:11:01]

Done, also changed to RTC_DCHECK_NE.

-      rtp_payload_registry_.SetRtxPayloadType(kv.second, kv.first);
+      rtp_payload_registry_.SetRtxPayloadType(kv.first, kv.second);
     }
   }