Cast: Refactor RTCP handling

media/cast/net/cast_transport_config.cc

Index: media/cast/net/cast_transport_config.cc
diff --git a/media/cast/net/cast_transport_config.cc b/media/cast/net/cast_transport_config.cc
index ae8ec60551968bcd0242f9939d9d28d22fcaab40..a607f6fcb458883843bfc1fe16df0b6ac2294f26 100644
--- a/media/cast/net/cast_transport_config.cc
+++ b/media/cast/net/cast_transport_config.cc
@@ -8,7 +8,7 @@ namespace media {
 namespace cast {
 
 CastTransportRtpConfig::CastTransportRtpConfig()
-    : ssrc(0), rtp_payload_type(0), stored_frames(0) {}
+    : ssrc(0), feedback_ssrc(0), rtp_payload_type(0), stored_frames(0) {}
 
 CastTransportRtpConfig::~CastTransportRtpConfig() {}
 
@@ -52,9 +52,5 @@ RtcpDlrrReportBlock::RtcpDlrrReportBlock()
     : last_rr(0), delay_since_last_rr(0) {}
 RtcpDlrrReportBlock::~RtcpDlrrReportBlock() {}
 
-SendRtcpFromRtpSenderData::SendRtcpFromRtpSenderData()
-    : packet_type_flags(0), sending_ssrc(0) {}
-SendRtcpFromRtpSenderData::~SendRtcpFromRtpSenderData() {}
-
 }  // namespace cast
 }  // namespace media