Replace IFGAS_Font with underlying concrete type

xfa/fxfa/app/xfa_textlayout.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_textlayout.h"
 
 #include <algorithm>
 
@@ skipping 314 matching lines @@
 }
 
 FX_BOOL CXFA_TextParser::IsSpaceRun(IFDE_CSSComputedStyle* pStyle) const {
   CFX_WideString wsValue;
   if (pStyle && pStyle->GetCustomStyle(FX_WSTRC(L"xfa-spacerun"), wsValue)) {
     wsValue.MakeLower();
     return wsValue == FX_WSTRC(L"yes");
   }
   return FALSE;
 }
-IFX_Font* CXFA_TextParser::GetFont(CXFA_TextProvider* pTextProvider,
-                                   IFDE_CSSComputedStyle* pStyle) const {
+CFX_GEFont* CXFA_TextParser::GetFont(CXFA_TextProvider* pTextProvider,
+                                     IFDE_CSSComputedStyle* pStyle) const {
   CFX_WideStringC wsFamily = FX_WSTRC(L"Courier");
   uint32_t dwStyle = 0;
   CXFA_Font font = pTextProvider->GetFontNode();
   if (font) {
     font.GetTypeface(wsFamily);
     if (font.IsBold()) {
       dwStyle |= FX_FONTSTYLE_Bold;
     }
     if (font.IsItalic()) {
       dwStyle |= FX_FONTSTYLE_Italic;
@@ skipping 1610 matching lines @@
   tr.iLength = iLength;
   tr.fFontSize = pPiece->fFontSize;
   tr.iBidiLevel = pPiece->iBidiLevel;
   tr.iCharRotation = 0;
   tr.wLineBreakChar = L'\n';
   tr.iVerticalScale = pPiece->iVerScale;
   tr.dwLayoutStyles = FX_RTFLAYOUTSTYLE_ExpandTab;
   tr.iHorizontalScale = pPiece->iHorScale;
   return TRUE;
 }