Cast: Refactor RTCP handling

media/cast/sender/video_sender_unittest.cc

Index: media/cast/sender/video_sender_unittest.cc
diff --git a/media/cast/sender/video_sender_unittest.cc b/media/cast/sender/video_sender_unittest.cc
index 25c202236856c5ead9e67994601c120e3476290e..2a2676bcc40db7cac995c0d516e7faed457d006e 100644
--- a/media/cast/sender/video_sender_unittest.cc
+++ b/media/cast/sender/video_sender_unittest.cc
@@ -15,6 +15,7 @@
 #include "media/cast/net/cast_transport_config.h"
 #include "media/cast/net/cast_transport_sender_impl.h"
 #include "media/cast/net/pacing/paced_sender.h"
+#include "media/cast/net/rtcp/rtcp_receiver.h"
 #include "media/cast/sender/video_sender.h"
 #include "media/cast/test/fake_single_thread_task_runner.h"
 #include "media/cast/test/fake_video_encode_accelerator.h"
@@ -66,7 +67,7 @@ class TestPacketSender : public PacketSender {
       callback_ = cb;
       return false;
     }
-    if (Rtcp::IsRtcpPacket(&packet->data[0], packet->data.size())) {
+    if (RtcpReceiver::IsRtcpPacket(&packet->data[0], packet->data.size())) {
       ++number_of_rtcp_packets_;
     } else {
       // Check that at least one RTCP packet was sent before the first RTP