Add Cast PLI support on sender side.

media/cast/net/rtcp/test_rtcp_packet_builder.h

Index: media/cast/net/rtcp/test_rtcp_packet_builder.h
diff --git a/media/cast/net/rtcp/test_rtcp_packet_builder.h b/media/cast/net/rtcp/test_rtcp_packet_builder.h
index 04e870fd5f528664484cbdac775b3ff1b3dd7f6c..0235869ad718a74c632f7df30dc396e781830348 100644
--- a/media/cast/net/rtcp/test_rtcp_packet_builder.h
+++ b/media/cast/net/rtcp/test_rtcp_packet_builder.h
@@ -56,31 +56,32 @@ class TestRtcpPacketBuilder {
  public:
   TestRtcpPacketBuilder();
 
-  void AddSr(uint32_t sender_ssrc, int number_of_report_blocks);
-  void AddSrWithNtp(uint32_t sender_ssrc,
+  void AddSr(uint32_t remote_ssrc, int number_of_report_blocks);
+  void AddSrWithNtp(uint32_t remote_ssrc,
                     uint32_t ntp_high,
                     uint32_t ntp_low,
                     uint32_t rtp_timestamp);
-  void AddRr(uint32_t sender_ssrc, int number_of_report_blocks);
+  void AddRr(uint32_t remote_ssrc, int number_of_report_blocks);
   void AddRb(uint32_t rtp_ssrc);
 
-  void AddXrHeader(uint32_t sender_ssrc);
-  void AddXrDlrrBlock(uint32_t sender_ssrc);
-  void AddXrExtendedDlrrBlock(uint32_t sender_ssrc);
+  void AddXrHeader(uint32_t remote_ssrc);
+  void AddXrDlrrBlock(uint32_t remote_ssrc);
+  void AddXrExtendedDlrrBlock(uint32_t remote_ssrc);
   void AddXrRrtrBlock();
   void AddXrUnknownBlock();
   void AddUnknownBlock();
 
-  void AddNack(uint32_t sender_ssrc, uint32_t media_ssrc);
-  void AddSendReportRequest(uint32_t sender_ssrc, uint32_t media_ssrc);
+  void AddNack(uint32_t remote_ssrc, uint32_t local_ssrc);
+  void AddSendReportRequest(uint32_t remote_ssrc, uint32_t local_ssrc);
 
-  void AddCast(uint32_t sender_ssrc,
-               uint32_t media_ssrc,
+  void AddCast(uint32_t remote_ssrc,
+               uint32_t local_ssrc,
                base::TimeDelta target_delay);
   void AddCst2(const std::vector<uint32_t>& later_received_frames);
   void AddErrorCst2();  // With wrong identifier.
+  void AddPli(uint32_t remote_ssrc, uint32_t local_ssrc);
 
-  void AddReceiverLog(uint32_t sender_ssrc);
+  void AddReceiverLog(uint32_t remote_ssrc);
   void AddReceiverFrameLog(uint32_t rtp_timestamp,
                            int num_events,
                            uint32_t event_timesamp_base);