XFA: Fix DOS newlines

xfa/src/fwl/src/lightwidget/checkbox.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include <memory>
 
 #include "xfa/src/foxitlib.h"
 
@@ skipping 35 matching lines @@
 CFWL_CheckBox::CFWL_CheckBoxDP::CFWL_CheckBoxDP()
     : m_fBoxHeight(16.0f), m_wsCaption(L"Check box") {}
 FWL_ERR CFWL_CheckBox::CFWL_CheckBoxDP::GetCaption(IFWL_Widget* pWidget,
                                                    CFX_WideString& wsCaption) {
   wsCaption = m_wsCaption;
   return FWL_ERR_Succeeded;
 }
 FX_FLOAT CFWL_CheckBox::CFWL_CheckBoxDP::GetBoxSize(IFWL_Widget* pWidget) {
   return m_fBoxHeight;
 }