Make GetDevFont() return a CFX_Font* instead of void*

xfa/fgas/font/fgas_gefont.h

 // 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
 
 #ifndef XFA_FGAS_FONT_FGAS_GEFONT_H_
 #define XFA_FGAS_FONT_FGAS_GEFONT_H_
 
 #include <map>
@@ skipping 31 matching lines @@
   virtual int32_t GetGlyphIndex(FX_WCHAR wUnicode, FX_BOOL bCharCode = FALSE);
   virtual int32_t GetAscent() const;
   virtual int32_t GetDescent() const;
   virtual FX_BOOL GetCharBBox(FX_WCHAR wUnicode,
                               CFX_Rect& bbox,
                               FX_BOOL bCharCode = FALSE);
   virtual FX_BOOL GetBBox(CFX_Rect& bbox);
   virtual int32_t GetItalicAngle() const;
   virtual void Reset();
   virtual IFGAS_Font* GetSubstFont(int32_t iGlyphIndex) const;
-  virtual void* GetDevFont() const { return (void*)m_pFont; }
+  virtual CFX_Font* GetDevFont() const { return m_pFont; }
   virtual void SetFontProvider(CXFA_PDFFontMgr* pProvider) {
     m_pProvider = pProvider;
   }
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
   virtual void SetLogicalFontStyle(uint32_t dwLogFontStyle) {
     m_bUseLogFontStyle = TRUE;
     m_dwLogFontStyle = dwLogFontStyle;
   }
 #endif
 
@@ skipping 25 matching lines @@
                        int32_t& iWidth,
                        FX_BOOL bRecursive,
                        FX_BOOL bCharCode = FALSE);
   int32_t GetGlyphIndex(FX_WCHAR wUnicode,
                         FX_BOOL bRecursive,
                         IFGAS_Font** ppFont,
                         FX_BOOL bCharCode = FALSE);
 };
 
 #endif  // XFA_FGAS_FONT_FGAS_GEFONT_H_