FWL refcounts never incremented (part 2).

xfa/src/fwl/src/basewidget/include/fwl_pictureboximp.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_PICTUREBOX_IMP_H
 #define _FWL_PICTUREBOX_IMP_H
 class CFWL_WidgetImp;
 class CFWL_WidgetImpProperties;
 class CFWL_WidgetImpDelegate;
 class IFWL_Widget;
 class CFWL_PictureBoxImp;
 class CFWL_PictureBoxImpDelegate;
 class CFWL_PictureBoxImp : public CFWL_WidgetImp {
  public:
-  CFWL_PictureBoxImp(IFWL_Widget* pOuter = NULL);
   CFWL_PictureBoxImp(const CFWL_WidgetImpProperties& properties,
-                     IFWL_Widget* pOuter = NULL);
+                     IFWL_Widget* pOuter);
   ~CFWL_PictureBoxImp();
   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);
 
@@ skipping 13 matching lines @@
 class CFWL_PictureBoxImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_PictureBoxImpDelegate(CFWL_PictureBoxImp* pOwner);
   FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = NULL) override;
 
  protected:
   CFWL_PictureBoxImp* m_pOwner;
 };
 #endif