Remove RegisterExternal{De,En}coder error codes.

webrtc/video_engine/vie_channel.cc

 /*
  *  Copyright (c) 2012 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 417 matching lines @@
   }
   return 0;
 }
 
 
 int32_t ViEChannel::RegisterExternalDecoder(const uint8_t pl_type,
                                             VideoDecoder* decoder,
                                             bool buffered_rendering,
                                             int32_t render_delay) {
   RTC_DCHECK(!sender_);
-  int32_t result;
-  result = vcm_->RegisterExternalDecoder(decoder, pl_type, buffered_rendering);
-  if (result != VCM_OK) {
-    return result;
-  }
+  vcm_->RegisterExternalDecoder(decoder, pl_type, buffered_rendering);
   return vcm_->SetRenderDelay(render_delay);
 }
 
 int32_t ViEChannel::DeRegisterExternalDecoder(const uint8_t pl_type) {
   RTC_DCHECK(!sender_);
   VideoCodec current_receive_codec;
   int32_t result = 0;
   result = vcm_->ReceiveCodec(&current_receive_codec);
-  if (vcm_->RegisterExternalDecoder(NULL, pl_type, false) != VCM_OK) {
-    return -1;
-  }
+  vcm_->RegisterExternalDecoder(NULL, pl_type, false);
 
   if (result == 0 && current_receive_codec.plType == pl_type) {
     result = vcm_->RegisterReceiveCodec(&current_receive_codec,
                                         number_of_cores_, false);
   }
   return result;
 }
 
 int32_t ViEChannel::ReceiveCodecStatistics(uint32_t* num_key_frames,
                                            uint32_t* num_delta_frames) {
@@ skipping 755 matching lines @@
   CriticalSectionScoped cs(crit_.get());
   receive_stats_callback_ = receive_statistics_proxy;
 }
 
 void ViEChannel::SetIncomingVideoStream(
     IncomingVideoStream* incoming_video_stream) {
   CriticalSectionScoped cs(crit_.get());
   incoming_video_stream_ = incoming_video_stream;
 }
 }  // namespace webrtc