FWL refcounts never incremented (part 2).

xfa/src/fwl/src/basewidget/include/fwl_checkboximp.h

 // 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
 
 #ifndef _FWL_CHECKBOX_IMP_H
 #define _FWL_CHECKBOX_IMP_H
 class CFWL_WidgetImp;
 class CFWL_WidgetImpProperties;
 class CFWL_WidgetImpDelegate;
 class IFWL_Widget;
 class CFWL_CheckBoxImp;
 class CFWL_CheckBoxImpDelegate;
 class CFWL_CheckBoxImp : public CFWL_WidgetImp {
  public:
-  CFWL_CheckBoxImp(IFWL_Widget* pOuter = NULL);
   CFWL_CheckBoxImp(const CFWL_WidgetImpProperties& properties,
-                   IFWL_Widget* pOuter = NULL);
+                   IFWL_Widget* pOuter);
   ~CFWL_CheckBoxImp();
   virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
   virtual FX_DWORD GetClassID() const;
   virtual FWL_ERR Initialize();
   virtual FWL_ERR Finalize();
   virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
   virtual FWL_ERR Update();
   virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
                              const CFX_Matrix* pMatrix = NULL);
   virtual int32_t GetCheckState();
@@ skipping 24 matching lines @@
   void OnActivate(CFWL_Message* pMsg);
   void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
   void OnKeyDown(CFWL_MsgKey* pMsg);
   CFWL_CheckBoxImp* m_pOwner;
 };
 #endif