Add Cast PLI support on sender side.

media/cast/test/cast_benchmarks.cc

Index: media/cast/test/cast_benchmarks.cc
diff --git a/media/cast/test/cast_benchmarks.cc b/media/cast/test/cast_benchmarks.cc
index 3d3950e5a42c4b70e88ea652fb836dbaa86e527b..297a93266f1c9ded32e248895ffad8f89cb8cb9c 100644
--- a/media/cast/test/cast_benchmarks.cc
+++ b/media/cast/test/cast_benchmarks.cc
@@ -96,16 +96,18 @@ class CastTransportSenderWrapper : public CastTransportSender {
 
   void InitializeAudio(const CastTransportRtpConfig& config,
                        const RtcpCastMessageCallback& cast_message_cb,
-                       const RtcpRttCallback& rtt_cb) final {
+                       const RtcpRttCallback& rtt_cb,
+                       const RtcpPliCallback& key_frame_cb) final {
     audio_ssrc_ = config.ssrc;
-    transport_->InitializeAudio(config, cast_message_cb, rtt_cb);
+    transport_->InitializeAudio(config, cast_message_cb, rtt_cb, key_frame_cb);
   }
 
   void InitializeVideo(const CastTransportRtpConfig& config,
                        const RtcpCastMessageCallback& cast_message_cb,
-                       const RtcpRttCallback& rtt_cb) final {
+                       const RtcpRttCallback& rtt_cb,
+                       const RtcpPliCallback& key_frame_cb) final {
     video_ssrc_ = config.ssrc;
-    transport_->InitializeVideo(config, cast_message_cb, rtt_cb);
+    transport_->InitializeVideo(config, cast_message_cb, rtt_cb, key_frame_cb);
   }
 
   void InsertFrame(uint32_t ssrc, const EncodedFrame& frame) final {
@@ -147,16 +149,13 @@ class CastTransportSenderWrapper : public CastTransportSender {
       uint32_t sender_ssrc,
       const RtcpTimeData& time_data,
       const RtcpCastMessage* cast_message,
+      const RtcpPliMessage* pli_message,
       base::TimeDelta target_delay,
       const ReceiverRtcpEventSubscriber::RtcpEvents* rtcp_events,
       const RtpReceiverStatistics* rtp_receiver_statistics) final {
-    return transport_->SendRtcpFromRtpReceiver(ssrc,
-                                               sender_ssrc,
-                                               time_data,
-                                               cast_message,
-                                               target_delay,
-                                               rtcp_events,
-                                               rtp_receiver_statistics);
+    return transport_->SendRtcpFromRtpReceiver(
+        ssrc, sender_ssrc, time_data, cast_message, pli_message, target_delay,
+        rtcp_events, rtp_receiver_statistics);
   }
 
   void SetOptions(const base::DictionaryValue& options) final {}