Revert Make the new jitter buffer the default jitter buffer.

webrtc/video/video_receive_stream.h

Index: webrtc/video/video_receive_stream.h
diff --git a/webrtc/video/video_receive_stream.h b/webrtc/video/video_receive_stream.h
index f2d975534210ecfe1000b81eff306bbcec49a5ff..a6ee31ee42bd5351e263b8f91b4c423d33f2a6c7 100644
--- a/webrtc/video/video_receive_stream.h
+++ b/webrtc/video/video_receive_stream.h
@@ -139,6 +139,7 @@ class VideoReceiveStream : public webrtc::VideoReceiveStream,
   std::unique_ptr<IvfFileWriter> ivf_writer_ GUARDED_BY(ivf_writer_lock_);
 
   // Members for the new jitter buffer experiment.
+  const bool jitter_buffer_experiment_;
   std::unique_ptr<VCMJitterEstimator> jitter_estimator_;
   std::unique_ptr<video_coding::FrameBuffer> frame_buffer_;
 };