Properly ref-count CFGAS_GEFont with CFX_RetainPtr.

xfa/fxfa/app/xfa_fwltheme.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_FXFA_APP_XFA_FWLTHEME_H_
 #define XFA_FXFA_APP_XFA_FWLTHEME_H_
 
 #include <memory>
@@ skipping 19 matching lines @@
   ~CXFA_FWLTheme() override;
 
   // IFWL_ThemeProvider:
   void DrawBackground(CFWL_ThemeBackground* pParams) override;
   void DrawText(CFWL_ThemeText* pParams) override;
   void CalcTextRect(CFWL_ThemeText* pParams, CFX_RectF& rect) override;
   float GetCXBorderSize() const override;
   float GetCYBorderSize() const override;
   CFX_RectF GetUIMargin(CFWL_ThemePart* pThemePart) const override;
   float GetFontSize(CFWL_ThemePart* pThemePart) const override;
-  CFGAS_GEFont* GetFont(CFWL_ThemePart* pThemePart) const override;
+  CFX_RetainPtr<CFGAS_GEFont> GetFont(
+      CFWL_ThemePart* pThemePart) const override;
   float GetLineHeight(CFWL_ThemePart* pThemePart) const override;
   float GetScrollBarWidth() const override;
   FX_COLORREF GetTextColor(CFWL_ThemePart* pThemePart) const override;
   CFX_SizeF GetSpaceAboveBelow(CFWL_ThemePart* pThemePart) const override;
 
  private:
   CFWL_WidgetTP* GetTheme(CFWL_Widget* pWidget) const;
 
   std::unique_ptr<CFWL_CheckBoxTP> m_pCheckBoxTP;
   std::unique_ptr<CFWL_ListBoxTP> m_pListBoxTP;
   std::unique_ptr<CFWL_PictureBoxTP> m_pPictureBoxTP;
   std::unique_ptr<CFWL_ScrollBarTP> m_pSrollBarTP;
   std::unique_ptr<CFWL_EditTP> m_pEditTP;
   std::unique_ptr<CFWL_ComboBoxTP> m_pComboBoxTP;
   std::unique_ptr<CFWL_MonthCalendarTP> m_pMonthCalendarTP;
   std::unique_ptr<CFWL_DateTimePickerTP> m_pDateTimePickerTP;
   std::unique_ptr<CFWL_PushButtonTP> m_pPushButtonTP;
   std::unique_ptr<CFWL_CaretTP> m_pCaretTP;
   std::unique_ptr<CFWL_BarcodeTP> m_pBarcodeTP;
   std::unique_ptr<CFDE_TextOut> m_pTextOut;
-  CFGAS_GEFont* m_pCalendarFont;
+  CFX_RetainPtr<CFGAS_GEFont> m_pCalendarFont;
   CFX_WideString m_wsResource;
   CXFA_FFApp* const m_pApp;
   CFX_RectF m_Rect;
 };
 
 CXFA_FFWidget* XFA_ThemeGetOuterWidget(CFWL_Widget* pWidget);
 
 #endif  // XFA_FXFA_APP_XFA_FWLTHEME_H_