Add support for negotiating RTCP with reduced size.

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 a1426c34ab3e2b21149c5d789a732021782b827d..1a9a43d8dad0361d1ac6dbe40d328f170acc8f52 100644
--- a/talk/session/media/mediasession.cc
+++ b/talk/session/media/mediasession.cc
@@ -727,6 +727,8 @@ static bool CreateMediaContentOffer(
     offer->set_crypto_required(CT_SDES);
   }
   offer->set_rtcp_mux(options.rtcp_mux_enabled);
+  // TODO(pthatcher): Once we support this, enable it in CreateOffer.
+  // offer->set_rtcp_reduced_size(true);
   offer->set_multistream(options.is_muc);
   offer->set_rtp_header_extensions(rtp_extensions);
 
@@ -1005,6 +1007,8 @@ static bool CreateMediaContentAnswer(
   answer->set_rtp_header_extensions(negotiated_rtp_extensions);
 
   answer->set_rtcp_mux(options.rtcp_mux_enabled && offer->rtcp_mux());
+  // TODO(pthatcher): Once we support this, enable it in CreateOffer.
+  // answer->set_rtcp_reduced_size(offer->rtcp_reduced_size());
 
   if (sdes_policy != SEC_DISABLED) {
     CryptoParams crypto;