Replace IFGAS_Font with underlying concrete type

xfa/fxfa/app/xfa_ffwidgetacc.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/fxfa/app/xfa_ffwidgetacc.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 1499 matching lines @@
   if (pData->m_pDIBitmap && !pData->m_bNamedImage)
     delete pData->m_pDIBitmap;
 
   pData->m_pDIBitmap = newImage;
 }
 
 CXFA_WidgetLayoutData* CXFA_WidgetAcc::GetWidgetLayoutData() {
   return m_pLayoutData.get();
 }
 
-IFGAS_Font* CXFA_WidgetAcc::GetFDEFont() {
+CFGAS_GEFont* CXFA_WidgetAcc::GetFDEFont() {
   CFX_WideStringC wsFontName = FX_WSTRC(L"Courier");
   uint32_t dwFontStyle = 0;
   if (CXFA_Font font = GetFont()) {
     if (font.IsBold()) {
       dwFontStyle |= FX_FONTSTYLE_Bold;
     }
     if (font.IsItalic()) {
       dwFontStyle |= FX_FONTSTYLE_Italic;
     }
     font.GetTypeface(wsFontName);
@@ skipping 159 matching lines @@
     if (pIDNode) {
       pEmbAcc = (CXFA_WidgetAcc*)pIDNode->GetWidgetData();
     }
     if (pEmbAcc) {
       pEmbAcc->GetValue(wsValue, XFA_VALUEPICTURE_Display);
       return TRUE;
     }
   }
   return FALSE;
 }