Use high quantizer value for "big" frames after a sequence of "small" frames.

remoting/protocol/webrtc_frame_scheduler_simple.h

Index: remoting/protocol/webrtc_frame_scheduler_simple.h
diff --git a/remoting/protocol/webrtc_frame_scheduler_simple.h b/remoting/protocol/webrtc_frame_scheduler_simple.h
index 6f1c0d8513344086b07f0c43132f12acdc55e89d..86c54273f72398841eee2e94013ddf58996794b2 100644
--- a/remoting/protocol/webrtc_frame_scheduler_simple.h
+++ b/remoting/protocol/webrtc_frame_scheduler_simple.h
@@ -52,6 +52,9 @@ class WebrtcFrameSchedulerSimple : public WebrtcFrameScheduler {
   // Accumulator for capture and encoder delay history.
   RunningSamples frame_processing_delay_us_;
 
+  // Accumulator for updated region area in the previously encoded frames.
+  RunningSamples updated_region_area_;
+
   base::OneShotTimer capture_timer_;
 };