Reland "Remove ViEEncoder::SetNetworkStatus"

webrtc/modules/video_coding/video_sender.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 210 matching lines @@
     rtc::CritScope cs(&encoder_crit_);
     if (_encoder) {
       SetEncoderParameters(encoder_params);
     }
   }
 
   return VCM_OK;
 }
 
 void VideoSender::SetEncoderParameters(EncoderParameters params) {
+  // |target_bitrate == 0 | means that the network is down or the send pacer is
+  // full.
+  // TODO(perkj): Consider setting |target_bitrate| == 0 to the encoders.
+  // Especially if |encoder_has_internal_source_ | == true.
   if (params.target_bitrate == 0)
     return;
 
   if (params.input_frame_rate == 0) {
     // No frame rate estimate available, use default.
     params.input_frame_rate = current_codec_.maxFramerate;
   }
   if (_encoder != nullptr)
     _encoder->SetEncoderParameters(params);
 }
@@ skipping 137 matching lines @@
   // 10 kbps.
   int window_bps = std::max(threshold_bps / 10, 10000);
   _mediaOpt.SuspendBelowMinBitrate(threshold_bps, window_bps);
 }
 
 bool VideoSender::VideoSuspended() const {
   return _mediaOpt.IsVideoSuspended();
 }
 }  // namespace vcm
 }  // namespace webrtc