Implement the NackModule as part of the new jitter buffer.

webrtc/modules/video_coding/video_coding.gypi

 # Copyright (c) 2012 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.
 
 {
   'targets': [
@@ skipping 18 matching lines @@
         # headers
         'codec_database.h',
         'codec_timer.h',
         'content_metrics_processing.h',
         'decoding_state.h',
         'encoded_frame.h',
         'fec_tables_xor.h',
         'frame_buffer.h',
         'generic_decoder.h',
         'generic_encoder.h',
+        'histogram.h',
         'inter_frame_delay.h',
         'internal_defines.h',
         'jitter_buffer.h',
         'jitter_buffer_common.h',
         'jitter_estimator.h',
         'media_opt_util.h',
         'media_optimization.h',
         'nack_fec_tables.h',
+        'nack_module.h',
         'packet.h',
         'qm_select_data.h',
         'qm_select.h',
         'receiver.h',
         'rtt_filter.h',
         'session_info.h',
         'timestamp_map.h',
         'timing.h',
         'video_coding_impl.h',
 
         # sources
         'bitrate_adjuster.cc',
         'codec_database.cc',
         'codec_timer.cc',
         'content_metrics_processing.cc',
         'decoding_state.cc',
         'encoded_frame.cc',
         'frame_buffer.cc',
         'generic_decoder.cc',
         'generic_encoder.cc',
         'inter_frame_delay.cc',
+        'histogram.cc',
         'jitter_buffer.cc',
         'jitter_estimator.cc',
         'media_opt_util.cc',
         'media_optimization.cc',
+        'nack_module.cc',
         'packet.cc',
         'qm_select.cc',
         'receiver.cc',
         'rtt_filter.cc',
         'session_info.cc',
         'timestamp_map.cc',
         'timing.cc',
         'video_coding_impl.cc',
         'video_sender.cc',
         'video_receiver.cc',
       ], # source
       # TODO(jschuh): Bug 1348: fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
     },
   ],
 }