Make GetDevFont() return a CFX_Font* instead of void*

xfa/fwl/basewidget/fwl_barcodeimp.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 "xfa/fwl/basewidget/fwl_barcodeimp.h"
 
 #include "xfa/fwl/basewidget/fwl_editimp.h"
 #include "xfa/fwl/basewidget/fxmath_barcodeimp.h"
@@ skipping 95 matching lines @@
   if (!m_pBarcodeEngine)
     return;
   CFX_WideString wsText;
   if (GetText(wsText) != FWL_Error::Succeeded)
     return;
   CFWL_ThemePart part;
   part.m_pWidget = m_pInterface;
   IFWL_ThemeProvider* pTheme = GetAvailableTheme();
   IFGAS_Font* pFont = static_cast<IFGAS_Font*>(
       pTheme->GetCapacity(&part, CFWL_WidgetCapacity::Font));
-  CFX_Font* pCXFont =
-      pFont ? static_cast<CFX_Font*>(pFont->GetDevFont()) : nullptr;
+  CFX_Font* pCXFont = pFont ? pFont->GetDevFont() : nullptr;
   if (pCXFont) {
     m_pBarcodeEngine->SetFont(pCXFont);
   }
   FX_FLOAT* pFontSize = static_cast<FX_FLOAT*>(
       pTheme->GetCapacity(&part, CFWL_WidgetCapacity::FontSize));
   if (pFontSize) {
     m_pBarcodeEngine->SetFontSize(*pFontSize);
   }
   FX_ARGB* pFontColor = static_cast<FX_ARGB*>(
       pTheme->GetCapacity(&part, CFWL_WidgetCapacity::TextColor));
@@ skipping 86 matching lines @@
     : CFWL_EditImpDelegate(pOwner) {}
 
 void CFWL_BarcodeImpDelegate::OnProcessEvent(CFWL_Event* pEvent) {
   if (pEvent->GetClassID() == CFWL_EventType::TextChanged) {
     CFWL_BarcodeImp* pOwner = static_cast<CFWL_BarcodeImp*>(m_pOwner);
     pOwner->m_pBarcodeEngine.reset();
     pOwner->m_dwStatus = XFA_BCS_NeedUpdate;
   }
   CFWL_EditImpDelegate::OnProcessEvent(pEvent);
 }