GYP->GN of audio_device_tests. Remove dead code. Fix new warnings.

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 be1888eea338392e0f3952061990d8ba24a776b1..afe0975c07755d1882234c7d05e9111bf10f3d37 100644
--- a/webrtc/media/engine/webrtcvoiceengine.cc
+++ b/webrtc/media/engine/webrtcvoiceengine.cc
@@ -1218,12 +1218,9 @@ class WebRtcVoiceMediaChannel::WebRtcAudioSendStream
     RTC_DCHECK(!worker_thread_checker_.CalledOnValidThread());
     RTC_DCHECK(audio_capture_thread_checker_.CalledOnValidThread());
     RTC_DCHECK(voe_audio_transport_);
-    voe_audio_transport_->OnData(config_.voe_channel_id,
-                                 audio_data,
-                                 bits_per_sample,
-                                 sample_rate,
-                                 number_of_channels,
-                                 number_of_frames);
+    voe_audio_transport_->PushCaptureData(config_.voe_channel_id, audio_data,
+                                          bits_per_sample, sample_rate,
+                                          number_of_channels, number_of_frames);

[Max Morin WebRTC, 2016/08/05 11:52:29]

This was the only call to OnData, and all it did was forward to call to
PushCaptureData anyways.

   }
 
   // Callback from the |source_| when it is going away. In case Start() has