Replace IFGAS_Font with underlying concrete type

xfa/fde/cfde_txtedttextset.h

 // Copyright 2016 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
 
 #ifndef XFA_FDE_CFDE_TXTEDTTEXTSET_H_
 #define XFA_FDE_CFDE_TXTEDTTEXTSET_H_
 
 #include "xfa/fde/fde_visualset.h"
 
 class CFDE_TxtEdtPage;
 
 class CFDE_TxtEdtTextSet : public IFDE_TextSet {
  public:
   explicit CFDE_TxtEdtTextSet(CFDE_TxtEdtPage* pPage);
   ~CFDE_TxtEdtTextSet() override;
 
   FDE_VISUALOBJTYPE GetType() override;
   FX_BOOL GetBBox(FDE_HVISUALOBJ hVisualObj, CFX_RectF& bbox) override;
   FX_BOOL GetMatrix(FDE_HVISUALOBJ hVisualObj, CFX_Matrix& matrix) override;
   FX_BOOL GetRect(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt) override;
   FX_BOOL GetClip(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt) override;
   int32_t GetString(FDE_HVISUALOBJ hText, CFX_WideString& wsText) override;
-  IFX_Font* GetFont(FDE_HVISUALOBJ hText) override;
+  CFX_GEFont* GetFont(FDE_HVISUALOBJ hText) override;
   FX_FLOAT GetFontSize(FDE_HVISUALOBJ hText) override;
   FX_ARGB GetFontColor(FDE_HVISUALOBJ hText) override;
   int32_t GetDisplayPos(FDE_HVISUALOBJ hText,
                         FXTEXT_CHARPOS* pCharPos,
                         FX_BOOL bCharCode = FALSE,
                         CFX_WideString* pWSForms = NULL) override;
   int32_t GetCharRects(FDE_HVISUALOBJ hText, CFX_RectFArray& rtArray) override;
   int32_t GetCharRects_Impl(FDE_HVISUALOBJ hText,
                             CFX_RectFArray& rtArray,
                             FX_BOOL bBBox = FALSE);
 
  private:
   CFDE_TxtEdtPage* const m_pPage;
 };
 
 #endif  // XFA_FDE_CFDE_TXTEDTTEXTSET_H_