Replace IFGAS_Font with underlying concrete type

xfa/fde/fde_render.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/fde/fde_render.h"
 
 #include "xfa/fde/fde_gedevice.h"
 #include "xfa/fde/fde_object.h"
@@ skipping 93 matching lines @@
   FX_Free(m_pCharPos);
   m_pCharPos = nullptr;
   m_iCharPosCount = 0;
 }
 
 void CFDE_RenderContext::RenderText(IFDE_TextSet* pTextSet,
                                     FDE_TEXTEDITPIECE* pText) {
   ASSERT(m_pRenderDevice);
   ASSERT(pTextSet && pText);
 
-  IFGAS_Font* pFont = pTextSet->GetFont();
+  CFGAS_GEFont* pFont = pTextSet->GetFont();
   if (!pFont)
     return;
 
   int32_t iCount = pTextSet->GetDisplayPos(pText, nullptr, FALSE);
   if (iCount < 1)
     return;
 
   if (!m_pBrush)
     m_pBrush.reset(new CFDE_Brush);
 
   if (!m_pCharPos)
     m_pCharPos = FX_Alloc(FXTEXT_CHARPOS, iCount);
   else if (m_iCharPosCount < iCount)
     m_pCharPos = FX_Realloc(FXTEXT_CHARPOS, m_pCharPos, iCount);
 
   if (m_iCharPosCount < iCount)
     m_iCharPosCount = iCount;
 
   iCount = pTextSet->GetDisplayPos(pText, m_pCharPos, FALSE);
   FX_FLOAT fFontSize = pTextSet->GetFontSize();
   FX_ARGB dwColor = pTextSet->GetFontColor();
   m_pBrush->SetColor(dwColor);
   m_pRenderDevice->DrawString(m_pBrush.get(), pFont, m_pCharPos, iCount,
                               fFontSize, &m_Transform);
 }