Cast: Refactor RTCP handling

media/cast/receiver/cast_receiver_impl.cc

Index: media/cast/receiver/cast_receiver_impl.cc
diff --git a/media/cast/receiver/cast_receiver_impl.cc b/media/cast/receiver/cast_receiver_impl.cc
index 36669b9e621b24c40a60b0e5c5f0083b94298e97..91821bbb73799d5b159a9ed10ebeb7f7fe37ee76 100644
--- a/media/cast/receiver/cast_receiver_impl.cc
+++ b/media/cast/receiver/cast_receiver_impl.cc
@@ -10,6 +10,7 @@
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
+#include "media/cast/net/rtcp/rtcp_receiver.h"
 #include "media/cast/receiver/audio_decoder.h"
 #include "media/cast/receiver/video_decoder.h"
 
@@ -51,8 +52,8 @@ void CastReceiverImpl::DispatchReceivedPacket(scoped_ptr<Packet> packet) {
   const size_t length = packet->size();
 
   uint32 ssrc_of_sender;
-  if (Rtcp::IsRtcpPacket(data, length)) {
-    ssrc_of_sender = Rtcp::GetSsrcOfSender(data, length);
+  if (RtcpReceiver::IsRtcpPacket(data, length)) {
+    ssrc_of_sender = RtcpReceiver::GetSsrcOfSender(data, length);
   } else if (!FrameReceiver::ParseSenderSsrc(data, length, &ssrc_of_sender)) {
     VLOG(1) << "Invalid RTP packet.";
     return;