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 91a6d8cb5abbd9c1ed462fe34ae45140f191ab61..5e3d8d100987e27c868bae043188a0a524f6ef2d 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>