[Cast] Clean-up: Merge RtpReceiver+AudioReceiver+VideoReceiver-->FrameReceiver.

media/cast/audio_sender/audio_sender.cc

 // Copyright 2013 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/audio_sender/audio_sender.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "media/cast/audio_sender/audio_encoder.h"
@@ skipping 15 matching lines @@
       rtcp_(cast_environment,
             this,
             transport_sender_,
             NULL,  // paced sender.
             NULL,
             audio_config.rtcp_mode,
             base::TimeDelta::FromMilliseconds(audio_config.rtcp_interval),
             audio_config.rtp_config.ssrc,
             audio_config.incoming_feedback_ssrc,
             audio_config.rtcp_c_name,
-            true),
+            AUDIO_EVENT),
       num_aggressive_rtcp_reports_sent_(0),
       cast_initialization_cb_(STATUS_AUDIO_UNINITIALIZED),
       weak_factory_(this) {
   rtcp_.SetCastReceiverEventHistorySize(kReceiverRtcpEventHistorySize);
   if (!audio_config.use_external_encoder) {
     audio_encoder_.reset(
         new AudioEncoder(cast_environment,
                          audio_config,
                          base::Bind(&AudioSender::SendEncodedAudioFrame,
                                     weak_factory_.GetWeakPtr())));
@@ skipping 104 matching lines @@
 
   if (!cast_feedback.missing_frames_and_packets_.empty()) {
     ResendPackets(cast_feedback.missing_frames_and_packets_);
   }
   VLOG(2) << "Received audio ACK "
           << static_cast<int>(cast_feedback.ack_frame_id_);
 }
 
 }  // namespace cast
 }  // namespace media