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_HVISUALOBJ hText) {
   ASSERT(m_pRenderDevice);
   ASSERT(pTextSet && hText);
 
-  IFX_Font* pFont = pTextSet->GetFont(hText);
+  CFX_GEFont* pFont = pTextSet->GetFont(hText);
   if (!pFont)
     return;
 
   int32_t iCount = pTextSet->GetDisplayPos(hText, nullptr, FALSE);
   if (iCount < 1)
     return;
 
   if (!m_pBrush)
     m_pBrush.reset(new CFDE_Brush);
 
@@ skipping 30 matching lines @@
   m_Transform.TransformRect(rtClip);
   const CFX_RectF& rtDevClip = m_pRenderDevice->GetClipRect();
   rtClip.Intersect(rtDevClip);
   hState = m_pRenderDevice->SaveState();
   return m_pRenderDevice->SetClipRect(rtClip);
 }
 
 void CFDE_RenderContext::RestoreClip(FDE_HDEVICESTATE hState) {
   m_pRenderDevice->RestoreState(hState);
 }