Remove unused SignalMediaError and infrastructure.

talk/media/webrtc/webrtcvoiceengine.cc

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 2952 matching lines @@
       // Get speech level.
       rinfo.audio_level = (engine()->voe()->volume()->
           GetSpeechOutputLevelFullRange(ch_id, level) != -1) ? level : -1;
       info->receivers.push_back(rinfo);
     }
   }
 
   return true;
 }
 
-void WebRtcVoiceMediaChannel::GetLastMediaError(
-    uint32* ssrc, VoiceMediaChannel::Error* error) {
-  RTC_DCHECK(ssrc != NULL);
-  RTC_DCHECK(error != NULL);
-  FindSsrc(voe_channel(), ssrc);
-  *error = WebRtcErrorToChannelError(GetLastEngineError());
-}
-
 bool WebRtcVoiceMediaChannel::FindSsrc(int channel_num, uint32* ssrc) {
   rtc::CritScope lock(&receive_channels_cs_);
   RTC_DCHECK(ssrc != NULL);
   if (channel_num == -1 && send_ != SEND_NOTHING) {
     // Sometimes the VoiceEngine core will throw error with channel_num = -1.
     // This means the error is not limited to a specific channel.  Signal the
     // message using ssrc=0.  If the current channel is sending, use this
     // channel for sending the message.
     *ssrc = 0;
     return true;
@@ skipping 21 matching lines @@
   }
   return false;
 }
 
 void WebRtcVoiceMediaChannel::OnError(uint32 ssrc, int error) {
   if (error == VE_TYPING_NOISE_WARNING) {
     typing_noise_detected_ = true;
   } else if (error == VE_TYPING_NOISE_OFF_WARNING) {
     typing_noise_detected_ = false;
   }
-  SignalMediaError(ssrc, WebRtcErrorToChannelError(error));
 }
 
 int WebRtcVoiceMediaChannel::GetOutputLevel(int channel) {
   unsigned int ulevel;
   int ret =
       engine()->voe()->volume()->GetSpeechOutputLevel(channel, ulevel);
   return (ret == 0) ? static_cast<int>(ulevel) : -1;
 }
 
 int WebRtcVoiceMediaChannel::GetReceiveChannelNum(uint32 ssrc) const {
@@ skipping 227 matching lines @@
       LOG(LS_WARNING) << "Unknown codec " << ToString(codec);
       return false;
     }
   }
   return true;
 }
 
 }  // namespace cricket
 
 #endif  // HAVE_WEBRTC_VOICE