Properly ref-count CFGAS_GEFont with CFX_RetainPtr.

xfa/fde/tto/fde_textout.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_FDE_TTO_FDE_TEXTOUT_H_
 #define XFA_FDE_TTO_FDE_TEXTOUT_H_
 
 #include <memory>
@@ skipping 61 matching lines @@
  protected:
   int32_t m_iPieceCount;
 };
 typedef CFX_ObjectMassArrayTemplate<CFDE_TTOLine> CFDE_TTOLineArray;
 
 class CFDE_TextOut : public CFX_Target {
  public:
   CFDE_TextOut();
   ~CFDE_TextOut() override;
 
-  void SetFont(CFGAS_GEFont* pFont);
+  void SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont);
   void SetFontSize(FX_FLOAT fFontSize);
   void SetTextColor(FX_ARGB color);
   void SetStyles(uint32_t dwStyles);
   void SetTabWidth(FX_FLOAT fTabWidth);
   void SetEllipsisString(const CFX_WideString& wsEllipsis);
   void SetParagraphBreakChar(FX_WCHAR wch);
   void SetAlignment(int32_t iAlignment);
   void SetLineSpace(FX_FLOAT fLineSpace);
   void SetDIBitmap(CFX_DIBitmap* pDIB);
   void SetRenderDevice(CFX_RenderDevice* pDevice);
@@ skipping 53 matching lines @@
   void ReplaceWidthEllipsis();
   void DoAlignment(const CFX_RectF& rect);
   void OnDraw(const CFX_RectF& rtClip);
   int32_t GetDisplayPos(FDE_TTOPIECE* pPiece);
   int32_t GetCharRects(const FDE_TTOPIECE* pPiece);
 
   FX_TXTRUN ToTextRun(const FDE_TTOPIECE* pPiece);
   void DrawLine(const FDE_TTOPIECE* pPiece, CFDE_Pen*& pPen);
 
   std::unique_ptr<CFX_TxtBreak> m_pTxtBreak;
-  CFGAS_GEFont* m_pFont;  // not owned.
+  CFX_RetainPtr<CFGAS_GEFont> m_pFont;
   FX_FLOAT m_fFontSize;
   FX_FLOAT m_fLineSpace;
   FX_FLOAT m_fLinePos;
   FX_FLOAT m_fTolerance;
   int32_t m_iAlignment;
   int32_t m_iTxtBkAlignment;
   std::vector<int32_t> m_CharWidths;
   std::vector<int32_t> m_EllCharWidths;
   FX_WCHAR m_wParagraphBkChar;
   FX_ARGB m_TxtColor;
@@ skipping 10 matching lines @@
   int32_t m_iCurLine;
   int32_t m_iCurPiece;
   int32_t m_iTotalLines;
   std::vector<FXTEXT_CHARPOS> m_CharPos;
   std::unique_ptr<CFDE_RenderDevice> m_pRenderDevice;
   CFX_Int32Array m_hotKeys;
   CFX_RectFArray m_rectArray;
 };
 
 #endif  // XFA_FDE_TTO_FDE_TEXTOUT_H_