Deactivated the intelligibility enhancement functionality by default

webrtc/modules/BUILD.gn

 # Copyright (c) 2016 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.
 
 import("../build/webrtc.gni")
 import("audio_coding/audio_coding.gni")
@@ skipping 181 matching lines @@
       "audio_processing/agc/loudness_histogram_unittest.cc",
       "audio_processing/agc/mock_agc.h",
       "audio_processing/audio_buffer_unittest.cc",
       "audio_processing/beamformer/array_util_unittest.cc",
       "audio_processing/beamformer/complex_matrix_unittest.cc",
       "audio_processing/beamformer/covariance_matrix_generator_unittest.cc",
       "audio_processing/beamformer/matrix_unittest.cc",
       "audio_processing/beamformer/mock_nonlinear_beamformer.h",
       "audio_processing/beamformer/nonlinear_beamformer_unittest.cc",
       "audio_processing/echo_cancellation_impl_unittest.cc",
-      "audio_processing/intelligibility/intelligibility_enhancer_unittest.cc",
-      "audio_processing/intelligibility/intelligibility_utils_unittest.cc",
+
+      # "audio_processing/intelligibility/intelligibility_enhancer_unittest.cc",
+      # "audio_processing/intelligibility/intelligibility_utils_unittest.cc",
       "audio_processing/splitting_filter_unittest.cc",
       "audio_processing/transient/dyadic_decimator_unittest.cc",
       "audio_processing/transient/file_utils.cc",
       "audio_processing/transient/file_utils.h",
       "audio_processing/transient/file_utils_unittest.cc",
       "audio_processing/transient/moving_moments_unittest.cc",
       "audio_processing/transient/transient_detector_unittest.cc",
       "audio_processing/transient/transient_suppressor_unittest.cc",
       "audio_processing/transient/wpd_node_unittest.cc",
       "audio_processing/transient/wpd_tree_unittest.cc",
@@ skipping 411 matching lines @@
         "audio_device/ios/objc/RTCAudioSessionTest.mm",
         "video_coding/codecs/h264/h264_video_toolbox_nalu_unittest.cc",
       ]
 
       ldflags = [ "-ObjC" ]
 
       # TODO(kjellander): Mac bundle files.
     }
   }
 }