Inject network state predictor into video quality test.

Bug: webrtc:10492
Change-Id: Ia2ae5de1019ac4ab89e54e261b1d94a482334ee9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133161
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Ying Wang <yinwa@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27681}
diff --git a/test/call_test.h b/test/call_test.h
index dcdb03b..99f37c5 100644
--- a/test/call_test.h
+++ b/test/call_test.h
@@ -200,6 +200,8 @@
       DegradationPreference::MAINTAIN_FRAMERATE;
 
   std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory_;
+  std::unique_ptr<NetworkStatePredictorFactoryInterface>
+      network_state_predictor_factory_;
 
   test::FunctionVideoEncoderFactory fake_encoder_factory_;
   int fake_encoder_max_bitrate_ = -1;