Move responsibility for RTP header extensions on video receive.

webrtc/media/engine/webrtcvideoengine2.cc

Index: webrtc/media/engine/webrtcvideoengine2.cc
diff --git a/webrtc/media/engine/webrtcvideoengine2.cc b/webrtc/media/engine/webrtcvideoengine2.cc
index e92598d408d53e057a3b61bb815f18f854afde42..0154c3d4a870935c911a0a0b3804c8728327029e 100644
--- a/webrtc/media/engine/webrtcvideoengine2.cc
+++ b/webrtc/media/engine/webrtcvideoengine2.cc
@@ -1257,8 +1257,6 @@ void WebRtcVideoChannel2::ConfigureReceiverRtp(
 
   sp.GetFidSsrc(ssrc, &config->rtp.rtx_ssrc);
 
-  config->rtp.extensions = recv_rtp_extensions_;
-
   // TODO(brandtr): Generalize when we add support for multistream protection.
   if (sp.GetFecFrSsrc(ssrc, &flexfec_config->remote_ssrc)) {
     flexfec_config->protected_media_ssrcs = {ssrc};
@@ -1267,7 +1265,6 @@ void WebRtcVideoChannel2::ConfigureReceiverRtp(
     // TODO(brandtr): We should be spec-compliant and set |transport_cc| here
     // based on the rtcp-fb for the FlexFEC codec, not the media codec.
     flexfec_config->transport_cc = config->rtp.transport_cc;
-    flexfec_config->rtp_header_extensions = config->rtp.extensions;
   }
 }
 
@@ -2326,11 +2323,6 @@ void WebRtcVideoChannel2::WebRtcVideoReceiveStream::SetRecvParameters(
     ConfigureCodecs(*params.codec_settings, &old_decoders);
     needs_recreation = true;
   }
-  if (params.rtp_header_extensions) {
-    config_.rtp.extensions = *params.rtp_header_extensions;
-    flexfec_config_.rtp_header_extensions = *params.rtp_header_extensions;
-    needs_recreation = true;
-  }
   if (needs_recreation) {
     LOG(LS_INFO) << "RecreateWebRtcStream (recv) because of SetRecvParameters";
     RecreateWebRtcStream();