Revert of Move RtcEventLog object from inside VoiceEngine to Call.

webrtc/voice_engine/include/voe_codec.h

 /*
  *  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.
  */
 
@@ skipping 17 matching lines @@
 //  codec->Release();
 //  VoiceEngine::Delete(voe);
 //
 #ifndef WEBRTC_VOICE_ENGINE_VOE_CODEC_H
 #define WEBRTC_VOICE_ENGINE_VOE_CODEC_H
 
 #include "webrtc/common_types.h"
 
 namespace webrtc {
 
+class RtcEventLog;
 class VoiceEngine;
 
 class WEBRTC_DLLEXPORT VoECodec {
  public:
   // Factory for the VoECodec sub-API. Increases an internal
   // reference counter if successful. Returns NULL if the API is not
   // supported or if construction fails.
   static VoECodec* GetInterface(VoiceEngine* voiceEngine);
 
   // Releases the VoECodec sub-API and decreases an internal
@@ skipping 76 matching lines @@
   // TODO(minyue): Make SetOpusMaxPlaybackRate() pure virtual when
   // fakewebrtcvoiceengine in talk is ready.
   virtual int SetOpusMaxPlaybackRate(int channel, int frequency_hz) {
     return -1;
   }
 
   // If send codec is Opus on a specified |channel|, set its DTX. Returns 0 if
   // 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. This pointer will remain valid until VoiceEngine is destroyed.
+  virtual RtcEventLog* GetEventLog() = 0;
+
  protected:
   VoECodec() {}
   virtual ~VoECodec() {}
 };
 
 }  // namespace webrtc
 
 #endif  //  WEBRTC_VOICE_ENGINE_VOE_CODEC_H