Delete unneeded includes of deprecated system_wrappers include files.

webrtc/modules/video_coding/utility/frame_dropper.cc

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/modules/video_coding/utility/frame_dropper.h"
 
 #include <algorithm>
 
 #include "webrtc/base/logging.h"
-#include "webrtc/system_wrappers/include/trace.h"
 
 namespace webrtc {
 
 namespace {
 
 const float kDefaultFrameSizeAlpha = 0.9f;
 const float kDefaultKeyFrameRatioAlpha = 0.99f;
 // 1 key frame every 10th second in 30 fps.
 const float kDefaultKeyFrameRatioValue = 1 / 300.0f;
 
@@ skipping 244 matching lines @@
 // This is a temporary fix for screencasting where very large frames from
 // encoder will cause very slow response (too many frame drops).
 // TODO(isheriff): Remove this now that large delta frames are also spread out ?
 void FrameDropper::CapAccumulator() {
   float max_accumulator = target_bitrate_ * kAccumulatorCapBufferSizeSecs;
   if (accumulator_ > max_accumulator) {
     accumulator_ = max_accumulator;
   }
 }
 }  // namespace webrtc