Revert of Delete unused code from systeminfo.

webrtc/media/base/videocapturer.cc

 /*
  *  Copyright (c) 2010 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.
  */
 
 // Implementation file of class VideoCapturer.
 
 #include "webrtc/media/base/videocapturer.h"
 
 #include <algorithm>
 
 #include "webrtc/base/common.h"
 #include "webrtc/base/logging.h"
+#include "webrtc/base/systeminfo.h"
 #include "webrtc/video_frame.h"
 
 namespace cricket {
 
 namespace {
 
 static const int64_t kMaxDistance = ~(static_cast<int64_t>(1) << 63);
 #ifdef WEBRTC_LINUX
 static const int kYU12Penalty = 16;  // Needs to be higher than MJPG index.
 #endif
@@ skipping 334 matching lines @@
 void VideoCapturer::UpdateInputSize(int width, int height) {
   // Update stats protected from fetches from different thread.
   rtc::CritScope cs(&frame_stats_crit_);
 
   input_size_valid_ = true;
   input_width_ = width;
   input_height_ = height;
 }
 
 }  // namespace cricket