Add support for negotiating RTCP with reduced size.

talk/session/media/mediasession.cc

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 709 matching lines @@
     bool add_legacy_stream,
     StreamParamsVec* current_streams,
     MediaContentDescriptionImpl<C>* offer) {
   offer->AddCodecs(codecs);
   offer->SortCodecs();
 
   if (secure_policy == SEC_REQUIRED) {
     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);
 
   if (!AddStreamParams(
           offer->type(), options.streams, current_streams,
           offer, add_legacy_stream)) {
     return false;
   }
 
 #ifdef HAVE_SRTP
@@ skipping 258 matching lines @@
   answer->AddCodecs(negotiated_codecs);
   answer->SortCodecs();
   answer->set_protocol(offer->protocol());
   RtpHeaderExtensions negotiated_rtp_extensions;
   NegotiateRtpHeaderExtensions(local_rtp_extenstions,
                                offer->rtp_header_extensions(),
                                &negotiated_rtp_extensions);
   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;
     if (SelectCrypto(offer, bundle_enabled, &crypto)) {
       if (current_cryptos) {
         FindMatchingCrypto(*current_cryptos, crypto, &crypto);
       }
       answer->AddCrypto(crypto);
     }
   }
@@ skipping 951 matching lines @@
   } else if (channel_name == GICE_CHANNEL_NAME_DATA_RTP ||
              channel_name == GICE_CHANNEL_NAME_DATA_RTCP) {
     *media_type = MEDIA_TYPE_DATA;
     return true;
   }
 
   return false;
 }
 
 }  // namespace cricket