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

webrtc/modules/audio_processing/aec/aec_core_internal.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 127 matching lines @@
   int delay_correction_count;
   int shift_offset;
   float delay_quality_threshold;
   int frame_count;
 
   // 0 = delay agnostic mode (signal based delay correction) disabled.
   // Otherwise enabled.
   int delay_agnostic_enabled;
   // 1 = extended filter mode enabled, 0 = disabled.
   int extended_filter_enabled;
+  // 1 = next generation aec mode enabled, 0 = disabled.
+  int next_generation_aec_enabled;
+
   // Runtime selection of number of filter partitions.
   int num_partitions;
 
   // Flag that extreme filter divergence has been detected by the Echo
   // Suppressor.
   int extreme_filter_divergence;
 
 #ifdef WEBRTC_AEC_DEBUG_DUMP
   // Sequence number of this AEC instance, so that different instances can
   // choose different dump file names.
@@ skipping 58 matching lines @@
 extern WebRtcAecPartitionDelay WebRtcAec_PartitionDelay;
 
 typedef void (*WebRtcAecStoreAsComplex)(const float* data,
                                         float data_complex[2][PART_LEN1]);
 extern WebRtcAecStoreAsComplex WebRtcAec_StoreAsComplex;
 
 typedef void (*WebRtcAecWindowData)(float* x_windowed, const float* x);
 extern WebRtcAecWindowData WebRtcAec_WindowData;
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_CORE_INTERNAL_H_