Revert of Remove ignored return code from modules.

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 35 matching lines @@
   // Allow VideoSender to be created on one thread but used on another, post
   // construction. This is currently how this class is being used by at least
   // one external project (diffractor).
   _mediaOpt.EnableQM(qm_settings_callback_ != nullptr);
   _mediaOpt.Reset();
   main_thread_.DetachFromThread();
 }
 
 VideoSender::~VideoSender() {}
 
-void VideoSender::Process() {
+int32_t VideoSender::Process() {
+  int32_t returnValue = VCM_OK;
+
   if (_sendStatsTimer.TimeUntilProcess() == 0) {
     _sendStatsTimer.Processed();
     CriticalSectionScoped cs(process_crit_sect_.get());
     if (_sendStatsCallback != nullptr) {
       uint32_t bitRate = _mediaOpt.SentBitRate();
       uint32_t frameRate = _mediaOpt.SentFrameRate();
       _sendStatsCallback->SendStatistics(bitRate, frameRate);
     }
   }
 
   {
     rtc::CritScope cs(&params_crit_);
     // Force an encoder parameters update, so that incoming frame rate is
     // updated even if bandwidth hasn't changed.
     encoder_params_.input_frame_rate = _mediaOpt.InputFrameRate();
   }
+
+  return returnValue;
 }
 
 int64_t VideoSender::TimeUntilNextProcess() {
   return _sendStatsTimer.TimeUntilProcess();
 }
 
 // Register the send codec to be used.
 int32_t VideoSender::RegisterSendCodec(const VideoCodec* sendCodec,
                                        uint32_t numberOfCores,
                                        uint32_t maxPayloadSize) {
@@ skipping 286 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