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

webrtc/voice_engine/include/voe_codec.h

Index: webrtc/voice_engine/include/voe_codec.h
diff --git a/webrtc/voice_engine/include/voe_codec.h b/webrtc/voice_engine/include/voe_codec.h
index 5d94ac27365a91fa3df47901f28ad66422ab7b4f..a0703618e654a61c5dc378ccdf26af607ecf2a67 100644
--- a/webrtc/voice_engine/include/voe_codec.h
+++ b/webrtc/voice_engine/include/voe_codec.h
@@ -35,6 +35,7 @@
 
 namespace webrtc {
 
+class RtcEventLog;
 class VoiceEngine;
 
 class WEBRTC_DLLEXPORT VoECodec {
@@ -131,6 +132,10 @@ class WEBRTC_DLLEXPORT VoECodec {
   // success, and -1 if failed.
   virtual int SetOpusDtx(int channel, bool enable_dtx) = 0;
 
+  // Get a pointer to the event logging object associated with this Voice
+  // Engine.

[Henrik Grunell WebRTC, 2015/08/14 13:11:20]

Also document the lifetime here. Until VoE is destroyed?

[ivoc, 2015/08/14 13:23:13]

Done.

+  virtual RtcEventLog* GetEventLog() = 0;

[Henrik Grunell WebRTC, 2015/08/14 13:11:20]

Just to verify: is the event log thread safe?

[ivoc, 2015/08/14 13:23:13]

Yes, it is indeed thread safe.

[Henrik Grunell WebRTC, 2015/08/14 13:41:44]

Acknowledged.

+
  protected:
   VoECodec() {}
   virtual ~VoECodec() {}