Remove usage of VoEVolumeControl from WVoE and Audio[Send|Receive]Stream.

webrtc/audio/audio_receive_stream.cc

Index: webrtc/audio/audio_receive_stream.cc
diff --git a/webrtc/audio/audio_receive_stream.cc b/webrtc/audio/audio_receive_stream.cc
index 8dc14e850f74f73f1fe5b59208bbe424962016e8..8c073d9c8c3250e29d132d4cbb27566c999687da 100644
--- a/webrtc/audio/audio_receive_stream.cc
+++ b/webrtc/audio/audio_receive_stream.cc
@@ -207,6 +207,11 @@ webrtc::AudioReceiveStream::Stats AudioReceiveStream::GetStats() const {
   return stats;
 }
 
+int AudioReceiveStream::GetOutputLevel() const {
+  RTC_DCHECK_RUN_ON(&worker_thread_checker_);
+  return channel_proxy_->GetSpeechOutputLevel();
+}
+
 void AudioReceiveStream::SetSink(std::unique_ptr<AudioSinkInterface> sink) {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
   channel_proxy_->SetSink(std::move(sink));