Cast: Remove unused RTCP messages

media/cast/cast_config.h

Index: media/cast/cast_config.h
diff --git a/media/cast/cast_config.h b/media/cast/cast_config.h
index c2d8db35f0dd1a59856e8b24f67abe59228f2ef4..fd75fc4d6d3c1609c1d58eb62e82c397d7338596 100644
--- a/media/cast/cast_config.h
+++ b/media/cast/cast_config.h
@@ -36,7 +36,6 @@ struct AudioSenderConfig {
   uint32 incoming_feedback_ssrc;
 
   int rtcp_interval;
-  std::string rtcp_c_name;
 
   // The total amount of time between a frame's capture/recording on the sender
   // and its playback on the receiver (i.e., shown to a user).  This is fixed as
@@ -73,7 +72,6 @@ struct VideoSenderConfig {
   uint32 incoming_feedback_ssrc;  // TODO(miu): Rename to receiver_ssrc.
 
   int rtcp_interval;
-  std::string rtcp_c_name;
 
   // The total amount of time between a frame's capture/recording on the sender
   // and its playback on the receiver (i.e., shown to a user).  This is fixed as
@@ -123,11 +121,6 @@ struct FrameReceiverConfig {
   // TODO(miu): Remove this since it's never not kDefaultRtcpIntervalMs.
   int rtcp_interval;
 
-  // CNAME representing this receiver.
-  // TODO(miu): Remove this since it should be derived elsewhere (probably in
-  // the transport layer).
-  std::string rtcp_c_name;
-
   // The total amount of time between a frame's capture/recording on the sender
   // and its playback on the receiver (i.e., shown to a user).  This is fixed as
   // a value large enough to give the system sufficient time to encode,