Cast: Add capabity to send Receiver and Sender log messages over RTCP.

media/cast/rtcp/test_rtcp_packet_builder.h

Index: media/cast/rtcp/test_rtcp_packet_builder.h
diff --git a/media/cast/rtcp/test_rtcp_packet_builder.h b/media/cast/rtcp/test_rtcp_packet_builder.h
index b1f1acaafffe11154e9fe679f7c2721ad47c7224..b107812d9622bf8323bc2fd88f2230f2a787732e 100644
--- a/media/cast/rtcp/test_rtcp_packet_builder.h
+++ b/media/cast/rtcp/test_rtcp_packet_builder.h
@@ -75,6 +75,13 @@ class TestRtcpPacketBuilder {
   void AddRpsi(uint32 sender_ssrc, uint32 media_ssrc);
   void AddRemb(uint32 sender_ssrc, uint32 media_ssrc);
   void AddCast(uint32 sender_ssrc, uint32 media_ssrc);
+  void AddSenderLog(uint32 sender_ssrc);
+  void AddSenderFrameLog(uint8 event_id, uint32 rtp_timestamp);
+  void AddReceiverLog(uint32 sender_ssrc);
+  void AddReceiverFrameLog(uint32 rtp_timestamp, int num_events,
+                           uint32 event_timesamp_base);
+  void AddReceiverEventLog(uint16 event_data, uint8 event_id,
+                           uint16 event_timesamp_delta);
 
   const uint8* Packet();
   int Length() { return kIpPacketSize - big_endian_writer_.remaining(); }