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

webrtc/modules/video_coding/include/video_coding.h

Index: webrtc/modules/video_coding/include/video_coding.h
diff --git a/webrtc/modules/video_coding/include/video_coding.h b/webrtc/modules/video_coding/include/video_coding.h
index 062dda70806986d2497c4f8688021229e868d725..eeda8a2e34a03905ac3d0efffab6959e3b2358e5 100644
--- a/webrtc/modules/video_coding/include/video_coding.h
+++ b/webrtc/modules/video_coding/include/video_coding.h
@@ -72,21 +72,15 @@ class VideoCodingModule : public Module {
 
   enum ReceiverRobustness { kNone, kHardNack, kSoftNack, kReferenceSelection };
 
-  static VideoCodingModule* Create(
-      Clock* clock,
-      VideoEncoderRateObserver* encoder_rate_observer,
-      VCMQMSettingsCallback* qm_settings_callback);
+  static VideoCodingModule* Create(Clock* clock, EventFactory* event_factory);
 
   static VideoCodingModule* Create(
       Clock* clock,
-      VideoEncoderRateObserver* encoder_rate_observer,
       VCMQMSettingsCallback* qm_settings_callback,
       NackSender* nack_sender,
       KeyFrameRequestSender* keyframe_request_sender,
       EncodedImageCallback* pre_decode_image_callback);
 
-  static VideoCodingModule* Create(Clock* clock, EventFactory* event_factory);
-
   static VideoCodingModule* Create(
       Clock* clock,
       EventFactory* event_factory,