Remove old methods in AudioTransport, make it pass a gn build

webrtc/modules/audio_device/test/func_test_manager.cc

Index: webrtc/modules/audio_device/test/func_test_manager.cc
diff --git a/webrtc/modules/audio_device/test/func_test_manager.cc b/webrtc/modules/audio_device/test/func_test_manager.cc
index 6e58841b22f0a3108eb31ca69d5d9b017fed31db..da79688d8b49a629f1f03dda03f2201d75a7da97 100644
--- a/webrtc/modules/audio_device/test/func_test_manager.cc
+++ b/webrtc/modules/audio_device/test/func_test_manager.cc
@@ -563,6 +563,21 @@ int32_t AudioTransportImpl::NeedMorePlayData(
     return 0;
 }
 
+void AudioTransportImpl::PushCaptureData(int voe_channel,
+                                         const void* audio_data,
+                                         int bits_per_sample,
+                                         int sample_rate,
+                                         size_t number_of_channels,
+                                         size_t number_of_frames) {}
+
+void AudioTransportImpl::PullRenderData(int bits_per_sample,
+                                        int sample_rate,
+                                        size_t number_of_channels,
+                                        size_t number_of_frames,
+                                        void* audio_data,
+                                        int64_t* elapsed_time_ms,
+                                        int64_t* ntp_time_ms) {}
+
 FuncTestManager::FuncTestManager() :
     _audioDevice(NULL),
     _audioEventObserver(NULL),