Add Cast PLI support on sender side.

media/cast/receiver/frame_receiver.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_CAST_RECEIVER_FRAME_RECEIVER_H_
 #define MEDIA_CAST_RECEIVER_FRAME_RECEIVER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 108 matching lines @@
   // |cast_message|, |rtcp_events| and |rtp_receiver_statistics| are optional;
   // if |cast_message| is provided the RTCP receiver report will contain a Cast
   // ACK/NACK feedback message; |target_delay| is sent together with
   // |cast_message|. If |rtcp_events| is provided the RTCP receiver report will
   // include event log messages
   void SendRtcpReport(
       uint32_t rtp_receiver_ssrc,
       uint32_t rtp_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);
 
   const scoped_refptr<CastEnvironment> cast_environment_;
 
   // Transport used to send data back.
   CastTransportSender* const transport_;
 
   // Deserializes a packet into a RtpHeader + payload bytes.
@@ skipping 63 matching lines @@
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<FrameReceiver> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameReceiver);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_RECEIVER_FRAME_RECEIVER_H_