Boilerplate code addition in order to be able to test upcoming AEC additions

webrtc/modules/audio_processing/aec/aec_core.h

Index: webrtc/modules/audio_processing/aec/aec_core.h
diff --git a/webrtc/modules/audio_processing/aec/aec_core.h b/webrtc/modules/audio_processing/aec/aec_core.h
index a417c4ef3c2076185367b282a4efded75ab5c763..75925fc92921d641c940499dad561826af6f2f25 100644
--- a/webrtc/modules/audio_processing/aec/aec_core.h
+++ b/webrtc/modules/audio_processing/aec/aec_core.h
@@ -111,6 +111,12 @@ void WebRtcAec_enable_delay_agnostic(AecCore* self, int enable);
 // enabled and zero if disabled.
 int WebRtcAec_delay_agnostic_enabled(AecCore* self);
 
+// Non-zero enables, zero disables.
+void WebRtcAec_enable_next_generation_aec(AecCore* self, int enable);
+
+// Returns 1 if the next generation aec is enabled and zero if disabled.
+int WebRtcAec_next_generation_aec_enabled(AecCore* self);
+
 // Enables or disables extended filter mode. Non-zero enables, zero disables.
 void WebRtcAec_enable_extended_filter(AecCore* self, int enable);