Added basic framework for AEC3 in the audio processing module

webrtc/modules/audio_processing/include/config.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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_INCLUDE_CONFIG_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_INCLUDE_CONFIG_H_
 
 #include <map>
 
 #include "webrtc/base/basictypes.h"
 #include "webrtc/base/constructormagic.h"
 
 namespace webrtc {
 
 // Only add new values to the end of the enumeration and never remove (only
 // deprecate) to maintain binary compatibility.
 enum class ConfigOptionID {
   kMyExperimentForTest,
   kAlgo1CostFunctionForTest,
   kTemporalLayersFactory,  // Deprecated
-  kNetEqCapacityConfig,  // Deprecated
-  kNetEqFastAccelerate,  // Deprecated
-  kVoicePacing,  // Deprecated
+  kNetEqCapacityConfig,    // Deprecated
+  kNetEqFastAccelerate,    // Deprecated
+  kVoicePacing,            // Deprecated
   kExtendedFilter,
   kDelayAgnostic,
   kExperimentalAgc,
   kExperimentalNs,
   kBeamforming,
   kIntelligibility,
-  kEchoCanceller3,
+  kEchoCanceller3,  // Deprecated
   kAecRefinedAdaptiveFilter,
   kLevelControl
 };
 
 // Class Config is designed to ease passing a set of options across webrtc code.
 // Options are identified by typename in order to avoid incorrect casts.
 //
 // Usage:
 // * declaring an option:
 //    struct Algo1_CostFunction {
@@ skipping 77 matching lines @@
 
 template<typename T>
 void Config::Set(T* value) {
   BaseOption*& it = options_[identifier<T>()];
   delete it;
   it = new Option<T>(value);
 }
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_INCLUDE_CONFIG_H_