FWL refcounts never incremented (part 1)

xfa/src/fwl/src/lightwidget/scrollbar.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 "../../../foxitlib.h"
 CFWL_ScrollBar* CFWL_ScrollBar::Create() {
   return new CFWL_ScrollBar;
 }
 FWL_ERR CFWL_ScrollBar::Initialize(const CFWL_WidgetProperties* pProperties) {
   if (m_pIface)
     return FWL_ERR_Indefinite;
   if (pProperties) {
     *m_pProperties = *pProperties;
   }
-  m_pIface = IFWL_ScrollBar::Create();
+  m_pIface = new IFWL_ScrollBar;
   FWL_ERR ret =
       ((IFWL_ScrollBar*)m_pIface)
           ->Initialize(m_pProperties->MakeWidgetImpProperties(nullptr),
                        nullptr);
   if (ret == FWL_ERR_Succeeded) {
     CFWL_Widget::Initialize();
   }
   return ret;
 }
 FX_BOOL CFWL_ScrollBar::IsVertical() {
@@ skipping 51 matching lines @@
     return FWL_ERR_Indefinite;
   return ((IFWL_ScrollBar*)m_pIface)->SetTrackPos(fTrackPos);
 }
 FX_BOOL CFWL_ScrollBar::DoScroll(FX_DWORD dwCode, FX_FLOAT fPos) {
   if (!m_pIface)
     return FALSE;
   return ((IFWL_ScrollBar*)m_pIface)->DoScroll(dwCode, fPos);
 }
 CFWL_ScrollBar::CFWL_ScrollBar() {}
 CFWL_ScrollBar::~CFWL_ScrollBar() {}