[Cast] Halt AudioSender transmission when too many frames are in-flight.

media/cast/video_sender/video_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/video_sender/video_sender.h"
 
 #include <algorithm>
 #include <cstring>
 
 #include "base/bind.h"
@@ skipping 60 matching lines @@
                                                   create_video_encode_mem_cb));
   } else {
     video_encoder_.reset(new VideoEncoderImpl(
         cast_environment, video_config, max_unacked_frames_));
   }
   cast_initialization_status_ = STATUS_VIDEO_INITIALIZED;
 
   media::cast::transport::CastTransportVideoConfig transport_config;
   transport_config.codec = video_config.codec;
   transport_config.rtp.config = video_config.rtp_config;
-  transport_config.rtp.max_outstanding_frames = max_unacked_frames_ + 1;
+  transport_config.rtp.max_outstanding_frames = max_unacked_frames_;
   transport_sender_->InitializeVideo(transport_config);
 
   rtcp_.SetCastReceiverEventHistorySize(kReceiverRtcpEventHistorySize);
 
   memset(frame_id_to_rtp_timestamp_, 0, sizeof(frame_id_to_rtp_timestamp_));
 }
 
 VideoSender::~VideoSender() {
 }
 
@@ skipping 291 matching lines @@
   last_send_time_ = cast_environment_->Clock()->NowTicks();
 
   // Sending this extra packet is to kick-start the session. There is
   // no need to optimize re-transmission for this case.
   transport_sender_->ResendPackets(false, missing_frames_and_packets,
                                    false);
 }
 
 }  // namespace cast
 }  // namespace media