Remove rtcp_interval from cast_config

media/cast/sender/frame_sender.h

Index: media/cast/sender/frame_sender.h
diff --git a/media/cast/sender/frame_sender.h b/media/cast/sender/frame_sender.h
index c4aef586d575c92211d3b7652c35a50aaf732311..7a53c343ffdd18feab719d595556df06289a258f 100644
--- a/media/cast/sender/frame_sender.h
+++ b/media/cast/sender/frame_sender.h
@@ -25,7 +25,6 @@ class FrameSender {
   FrameSender(scoped_refptr<CastEnvironment> cast_environment,
               bool is_audio,
               CastTransportSender* const transport_sender,
-              base::TimeDelta rtcp_interval,
               int rtp_timebase,
               uint32 ssrc,
               double max_frame_rate,
@@ -107,8 +106,6 @@ class FrameSender {
   // Returns the number of frames that were sent but not yet acknowledged.
   int GetUnacknowledgedFrameCount() const;
 
-  const base::TimeDelta rtcp_interval_;
-
   // 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,