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

talk/session/media/channel.cc

Index: talk/session/media/channel.cc
diff --git a/talk/session/media/channel.cc b/talk/session/media/channel.cc
index ae27e332f870e8ec7eb87c04ac60de43c8ac904c..1886c11e37fbe797e688bf669e94df4a65f9133f 100644
--- a/talk/session/media/channel.cc
+++ b/talk/session/media/channel.cc
@@ -151,6 +151,7 @@ void RtpParametersFromMediaDescription(
   if (desc->rtp_header_extensions_set()) {
     params->extensions = desc->rtp_header_extensions();
   }
+  params->rtcp.reduced_size = desc->rtcp_reduced_size();
 }
 
 template <class Codec, class Options>