Adding reduced size RTCP configuration down to the video stream level.

talk/session/media/mediasession.cc

Index: talk/session/media/mediasession.cc
diff --git a/talk/session/media/mediasession.cc b/talk/session/media/mediasession.cc
index 7413026092f1d6f8c8742e407d48376ac5a5ea01..6f54b8c815f66f53c9d8433b546bafaea9e9559d 100644
--- a/talk/session/media/mediasession.cc
+++ b/talk/session/media/mediasession.cc
@@ -726,6 +726,10 @@ static bool CreateMediaContentOffer(
     offer->set_crypto_required(CT_SDES);
   }
   offer->set_rtcp_mux(options.rtcp_mux_enabled);
+  // TODO(pbos): Once we're sure this works correctly, enable it in CreateOffer.

[pbos-webrtc, 2015/12/03 00:15:49]

Uh, I'd rather not own this.

+  // if (offer->type() == cricket::MEDIA_TYPE_VIDEO) {
+  //   offer->set_rtcp_reduced_size(true);
+  // }
   offer->set_multistream(options.is_muc);
   offer->set_rtp_header_extensions(rtp_extensions);
 
@@ -1004,6 +1008,11 @@ static bool CreateMediaContentAnswer(
   answer->set_rtp_header_extensions(negotiated_rtp_extensions);
 
   answer->set_rtcp_mux(options.rtcp_mux_enabled && offer->rtcp_mux());
+  // TODO(pbos): Once we're sure this works correctly, enable it in

[pbos-webrtc, 2015/12/03 00:15:49]

Same here.

+  // CreateAnswer.
+  // if (answer->type() == cricket::MEDIA_TYPE_VIDEO) {
+  //   answer->set_rtcp_reduced_size(offer->rtcp_reduced_size());
+  // }
 
   if (sdes_policy != SEC_DISABLED) {
     CryptoParams crypto;