Refactored CL for moving the output to a separate thread.

webrtc/webrtc.gyp

 # 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': {
     'webrtc_all_dependencies': [
@@ skipping 124 matching lines @@
           ],
         }],
       ],
     },
     {
       'target_name': 'rtc_event_log',
       'type': 'static_library',
       'sources': [
         'call/rtc_event_log.cc',
         'call/rtc_event_log.h',
+        'call/rtc_event_log_helper_thread.cc',
+        'call/rtc_event_log_helper_thread.h',
       ],
       'conditions': [
         # If enable_protobuf is defined, we want to compile the protobuf
         # and add rtc_event_log.pb.h and rtc_event_log.pb.cc to the sources.
         ['enable_protobuf==1', {
           'dependencies': [
             'rtc_event_log_proto',
           ],
           'defines': [
             'ENABLE_RTC_EVENT_LOG',
           ],
         }],
       ],
     },
 
   ],
 }