Make code compile with clang_use_chrome_plugin (part VI)

xfa/fwl/lightwidget/cfwl_widgetproperties.h

 // Copyright 2016 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
 
 #ifndef XFA_FWL_LIGHTWIDGET_CFWL_WIDGETPROPERTIES_H_
 #define XFA_FWL_LIGHTWIDGET_CFWL_WIDGETPROPERTIES_H_
 
 #include "core/fxcrt/include/fx_coordinates.h"
 #include "core/fxcrt/include/fx_string.h"
 #include "core/fxcrt/include/fx_system.h"
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 
 class CFWL_Widget;
 class IFWL_DataProvider;
 
 class CFWL_WidgetProperties {
  public:
-  CFWL_WidgetProperties()
-      : m_dwStyles(FWL_WGTSTYLE_Child),
-        m_dwStyleExes(0),
-        m_dwStates(0),
-        m_pParent(nullptr),
-        m_pOwner(nullptr) {
-    m_rtWidget.Set(0, 0, 0, 0);
-  }
+  CFWL_WidgetProperties();
+  ~CFWL_WidgetProperties();
+  CFWL_WidgetProperties(const CFWL_WidgetProperties& other);
 
   CFWL_WidgetImpProperties MakeWidgetImpProperties(
       IFWL_DataProvider* pDataProvider) const;
 
   CFX_WideString m_wsWindowclass;
   CFX_Matrix m_ctmOnParent;
   CFX_RectF m_rtWidget;
   uint32_t m_dwStyles;
   uint32_t m_dwStyleExes;
   uint32_t m_dwStates;
   CFWL_Widget* m_pParent;
   CFWL_Widget* m_pOwner;
 };
 
 #endif  // XFA_FWL_LIGHTWIDGET_CFWL_WIDGETPROPERTIES_H_