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

webrtc/modules/video_coding/codec_database.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 26 matching lines @@
  public:
   VCMExtDecoderMapItem(VideoDecoder* external_decoder_instance,
                        uint8_t payload_type);
 
   uint8_t payload_type;
   VideoDecoder* external_decoder_instance;
 };
 
 class VCMCodecDataBase {
  public:
-  VCMCodecDataBase(VideoEncoderRateObserver* encoder_rate_observer,
-                   VCMEncodedFrameCallback* encoded_frame_callback);
+  explicit VCMCodecDataBase(VCMEncodedFrameCallback* encoded_frame_callback);
   ~VCMCodecDataBase();
 
   // Sender Side
   // Returns the default settings for the codec with type |codec_type|.
   static void Codec(VideoCodecType codec_type, VideoCodec* settings);
 
   // Sets the sender side codec and initiates the desired codec given the
   // VideoCodec struct.
   // Returns true if the codec was successfully registered, false otherwise.
   bool SetSendCodec(const VideoCodec* send_codec,
@@ skipping 88 matching lines @@
 
   int number_of_cores_;
   size_t max_payload_size_;
   bool periodic_key_frames_;
   bool pending_encoder_reset_;
   VideoCodec send_codec_;
   VideoCodec receive_codec_;
   uint8_t encoder_payload_type_;
   VideoEncoder* external_encoder_;
   bool internal_source_;
-  VideoEncoderRateObserver* const encoder_rate_observer_;
   VCMEncodedFrameCallback* const encoded_frame_callback_;
   std::unique_ptr<VCMGenericEncoder> ptr_encoder_;
   VCMGenericDecoder* ptr_decoder_;
   DecoderMap dec_map_;
   ExternalDecoderMap dec_external_map_;
 };  // VCMCodecDataBase
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_CODEC_DATABASE_H_