Fix stats for encoder target bitrate when target rate is zero.

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 108 matching lines @@
   virtual int ProtectionRequest(const FecProtectionParams* delta_params,
                                 const FecProtectionParams* key_params,
                                 uint32_t* sent_video_rate_bps,
                                 uint32_t* sent_nack_rate_bps,
                                 uint32_t* sent_fec_rate_bps) = 0;
 
  protected:
   virtual ~VCMProtectionCallback() {}
 };
 
-class VideoEncoderRateObserver {
- public:
-  virtual ~VideoEncoderRateObserver() {}
-  virtual void OnSetRates(uint32_t bitrate_bps, int framerate) = 0;
-};
-
 // Callback class used for telling the user about what frame type needed to
 // continue decoding.
 // Typically a key frame when the stream has been corrupted in some way.
 class VCMFrameTypeCallback {
  public:
   virtual int32_t RequestKeyFrame() = 0;
   virtual int32_t SliceLossIndicationRequest(const uint64_t pictureId) {
     return -1;
   }
 
@@ skipping 27 matching lines @@
  public:
   virtual void RequestKeyFrame() = 0;
 
  protected:
   virtual ~KeyFrameRequestSender() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_INCLUDE_VIDEO_CODING_DEFINES_H_