Add codec name to CodecSpecificInfo and get the codec name stats from there instead.

webrtc/modules/video_coding/include/video_coding_defines.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 59 matching lines @@
   virtual void OnDecoderImplementationName(const char* implementation_name) {}
 
  protected:
   virtual ~VCMReceiveCallback() {}
 };
 
 // Callback class used for informing the user of the bit rate and frame rate,
 // and the name of the encoder.
 class VCMSendStatisticsCallback {
  public:
-  virtual void SendStatistics(uint32_t bitRate,
-                              uint32_t frameRate,
-                              const std::string& encoder_name) = 0;
+  virtual void SendStatistics(uint32_t bitRate, uint32_t frameRate) = 0;
 
  protected:
   virtual ~VCMSendStatisticsCallback() {}
 };
 
 // Callback class used for informing the user of the incoming bit rate and frame
 // rate.
 class VCMReceiveStatisticsCallback {
  public:
   virtual void OnReceiveRatesUpdated(uint32_t bitRate, uint32_t frameRate) = 0;
@@ skipping 73 matching lines @@
  public:
   virtual void RequestKeyFrame() = 0;
 
  protected:
   virtual ~KeyFrameRequestSender() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_INCLUDE_VIDEO_CODING_DEFINES_H_