Remove RegisterExternal{De,En}coder error codes.

webrtc/modules/video_coding/codec_database.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 419 matching lines @@
     ptr_decoder_ = NULL;
   }
   DeregisterReceiveCodec(payload_type);
   delete (*it).second;
   dec_external_map_.erase(it);
   return true;
 }
 
 // Add the external encoder object to the list of external decoders.
 // Won't be registered as a receive codec until RegisterReceiveCodec is called.
-bool VCMCodecDataBase::RegisterExternalDecoder(
+void VCMCodecDataBase::RegisterExternalDecoder(
     VideoDecoder* external_decoder,
     uint8_t payload_type,
     bool internal_render_timing) {
   // Check if payload value already exists, if so  - erase old and insert new.
   VCMExtDecoderMapItem* ext_decoder = new VCMExtDecoderMapItem(
       external_decoder, payload_type, internal_render_timing);
-  if (!ext_decoder) {
-    return false;
-  }
   DeregisterExternalDecoder(payload_type);
   dec_external_map_[payload_type] = ext_decoder;
-  return true;
 }
 
 bool VCMCodecDataBase::DecoderRegistered() const {
   return !dec_map_.empty();
 }
 
 bool VCMCodecDataBase::RegisterReceiveCodec(
     const VideoCodec* receive_codec,
     int number_of_cores,
     bool require_key_frame) {
@@ skipping 165 matching lines @@
 
 const VCMExtDecoderMapItem* VCMCodecDataBase::FindExternalDecoderItem(
     uint8_t payload_type) const {
   ExternalDecoderMap::const_iterator it = dec_external_map_.find(payload_type);
   if (it != dec_external_map_.end()) {
     return (*it).second;
   }
   return NULL;
 }
 }  // namespace webrtc