Hooked up RtcEventLog. It lives in Voice Engine and pointers are propagated to ACM and Call.

webrtc/modules/audio_coding/main/audio_coding_module.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.
 
 {
   'variables': {
@@ skipping 21 matching lines @@
   'targets': [
     {
       'target_name': 'audio_coding_module',
       'type': 'static_library',
       'defines': [
         '<@(audio_coding_defines)',
       ],
       'dependencies': [
         '<@(audio_coding_dependencies)',
         '<(webrtc_root)/common.gyp:webrtc_common',
+        '<(webrtc_root)/webrtc.gyp:rtc_event_log',
         'neteq',
       ],
       'include_dirs': [
         'interface',
         '../../interface',
         '<(webrtc_root)',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           'interface',
@@ skipping 102 matching lines @@
           'sources': [
              'test/insert_packet_with_timing.cc',
              'test/Channel.cc',
              'test/PCMFile.cc',
            ],
         }, # delay_test
       ],
     }],
   ],
 }