Reland of Refactor webrtc/modules/desktop_capture for GN check

webrtc/modules/desktop_capture/shared_desktop_frame.cc

 /*
  *  Copyright (c) 2013 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/desktop_capture/shared_desktop_frame.h"
 
 #include <memory>
 
 #include "webrtc/base/constructormagic.h"
-#include "webrtc/system_wrappers/include/atomic32.h"
 
 namespace webrtc {
 
 SharedDesktopFrame::~SharedDesktopFrame() {}
 
 // static
 std::unique_ptr<SharedDesktopFrame> SharedDesktopFrame::Wrap(
     std::unique_ptr<DesktopFrame> desktop_frame) {
   return std::unique_ptr<SharedDesktopFrame>(
       new SharedDesktopFrame(new Core(std::move(desktop_frame))));
@@ skipping 20 matching lines @@
 }
 
 SharedDesktopFrame::SharedDesktopFrame(rtc::scoped_refptr<Core> core)
     : DesktopFrame((*core)->size(),
                    (*core)->stride(),
                    (*core)->data(),
                    (*core)->shared_memory()),
       core_(core) {}
 
 }  // namespace webrtc