Add Cast PLI support on sender side.

media/cast/sender/audio_sender.cc

 // 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.
 
 #include "media/cast/sender/audio_sender.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 50 matching lines @@
       audio_config.frequency / audio_encoder_->GetSamplesPerFrame();
 
   media::cast::CastTransportRtpConfig transport_config;
   transport_config.ssrc = audio_config.ssrc;
   transport_config.feedback_ssrc = audio_config.receiver_ssrc;
   transport_config.rtp_payload_type = audio_config.rtp_payload_type;
   transport_config.aes_key = audio_config.aes_key;
   transport_config.aes_iv_mask = audio_config.aes_iv_mask;
 
   transport_sender->InitializeAudio(
-      transport_config,
-      base::Bind(&AudioSender::OnReceivedCastFeedback,
+      transport_config, base::Bind(&AudioSender::OnReceivedCastFeedback,
+                                   weak_factory_.GetWeakPtr()),
+      base::Bind(&AudioSender::OnMeasuredRoundTripTime,
                  weak_factory_.GetWeakPtr()),
-      base::Bind(&AudioSender::OnMeasuredRoundTripTime,
-                 weak_factory_.GetWeakPtr()));
+      base::Bind(&AudioSender::OnReceivedPli, weak_factory_.GetWeakPtr()));
 }
 
 AudioSender::~AudioSender() {}
 
 void AudioSender::InsertAudio(scoped_ptr<AudioBus> audio_bus,
                               const base::TimeTicks& recorded_time) {
   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
 
   if (!audio_encoder_) {
     NOTREACHED();
@@ skipping 29 matching lines @@
   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
 
   samples_in_encoder_ -= audio_encoder_->GetSamplesPerFrame() + samples_skipped;
   DCHECK_GE(samples_in_encoder_, 0);
 
   SendEncodedFrame(encoder_bitrate, std::move(encoded_frame));
 }
 
 }  // namespace cast
 }  // namespace media