cast: Split Rtcp into two for sender and receiver

media/cast/net/cast_transport_config.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_
 #define MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 127 matching lines @@
   // Returns the number of bytes ever sent.
   virtual int64_t GetBytesSent() = 0;
 
   virtual ~PacketSender() {}
 };
 
 struct RtcpSenderInfo {
   RtcpSenderInfo();
   ~RtcpSenderInfo();
   // First three members are used for lipsync.
-  // First two members are used for rtt.
+  // Last two members are used for rtt.
   uint32_t ntp_seconds;
   uint32_t ntp_fraction;
   RtpTimeTicks rtp_timestamp;
   uint32_t send_packet_count;
   size_t send_octet_count;
 };
 
 struct RtcpReportBlock {
   RtcpReportBlock();
   ~RtcpReportBlock();
@@ skipping 19 matching lines @@
          lhs.ntp_fraction == rhs.ntp_fraction &&
          lhs.rtp_timestamp == rhs.rtp_timestamp &&
          lhs.send_packet_count == rhs.send_packet_count &&
          lhs.send_octet_count == rhs.send_octet_count;
 }
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_