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

remoting/protocol/webrtc_frame_scheduler_simple.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_SIMPLE_H_
 #define REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_SIMPLE_H_
 
 #include "remoting/protocol/webrtc_frame_scheduler.h"
 
 #include "base/timer/timer.h"
@@ skipping 34 matching lines @@
   base::TimeTicks last_capture_started_time_;
 
   LeakyBucket pacing_bucket_;
 
   // Set to true when encoding unchanged frames for top-off.
   bool top_off_is_active_ = false;
 
   // 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_;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_WEBRTC_FRAME_SCHEDULER_SIMPLE_H_