Adding "adapter" ORTC objects on top of ChannelManager/BaseChannel/etc.

webrtc/media/engine/webrtcvoiceengine.cc

Index: webrtc/media/engine/webrtcvoiceengine.cc
diff --git a/webrtc/media/engine/webrtcvoiceengine.cc b/webrtc/media/engine/webrtcvoiceengine.cc
index 3eb4c46700e51e4f89009d1aacc3f192896b6ad2..ba1bc7ff028a108682fd23e33776d3bd9530c8dd 100644
--- a/webrtc/media/engine/webrtcvoiceengine.cc
+++ b/webrtc/media/engine/webrtcvoiceengine.cc
@@ -1972,7 +1972,7 @@ bool WebRtcVoiceMediaChannel::SetSendCodecs(
   // parameters.
   // TODO(solenberg): Refactor this logic once we create AudioEncoders here.
   webrtc::AudioSendStream::Config::SendCodecSpec send_codec_spec;
-  {
+  do {
     send_codec_spec.nack_enabled = send_codec_spec_.nack_enabled;
 
     // Find send codec (the first non-telephone-event/CN codec).
@@ -1980,7 +1980,7 @@ bool WebRtcVoiceMediaChannel::SetSendCodecs(
         codecs, &send_codec_spec.codec_inst);
     if (!codec) {
       LOG(LS_WARNING) << "Received empty list of codecs.";
-      return false;
+      break;
     }
 
     send_codec_spec.transport_cc_enabled = HasTransportCc(*codec);
@@ -2050,7 +2050,7 @@ bool WebRtcVoiceMediaChannel::SetSendCodecs(
         break;
       }
     }
-  }
+  } while (0);
 
   if (send_codec_spec_ != send_codec_spec) {
     send_codec_spec_ = std::move(send_codec_spec);