Use actual type instead CFX_Deletable

core/fpdfapi/fpdf_page/include/cpdf_page.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 CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_
 #define CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_
 
 #include <memory>
 
 #include "core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
 #include "core/fxcrt/include/fx_basic.h"
 #include "core/fxcrt/include/fx_coordinates.h"
 #include "core/fxcrt/include/fx_system.h"
 
 class CPDF_Dictionary;
 class CPDF_Document;
 class CPDF_Object;
 class CPDF_PageRenderCache;
+class CRenderContext;
 
 class CPDF_Page : public CPDF_PageObjectHolder {
  public:
   class View {};  // Caller implements as desired, empty here due to layering.
 
   CPDF_Page(CPDF_Document* pDocument,
             CPDF_Dictionary* pPageDict,
             bool bPageCache);
   ~CPDF_Page() override;
 
   void ParseContent();
 
   void GetDisplayMatrix(CFX_Matrix& matrix,
                         int xPos,
                         int yPos,
                         int xSize,
                         int ySize,
                         int iRotate) const;
 
   FX_FLOAT GetPageWidth() const { return m_PageWidth; }
   FX_FLOAT GetPageHeight() const { return m_PageHeight; }
   CFX_FloatRect GetPageBBox() const { return m_BBox; }
   const CFX_Matrix& GetPageMatrix() const { return m_PageMatrix; }
   CPDF_Object* GetPageAttr(const CFX_ByteString& name) const;
   CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender.get(); }
 
-  CFX_Deletable* GetRenderContext() const { return m_pRenderContext.get(); }
-  void SetRenderContext(std::unique_ptr<CFX_Deletable> pContext) {
-    m_pRenderContext = std::move(pContext);
-  }
+  CRenderContext* GetRenderContext() const { return m_pRenderContext.get(); }
+  void SetRenderContext(std::unique_ptr<CRenderContext> pContext);
 
   View* GetView() const { return m_pView; }
   void SetView(View* pView) { m_pView = pView; }
 
  protected:
   friend class CPDF_ContentParser;
 
   void StartParse();
 
   FX_FLOAT m_PageWidth;
   FX_FLOAT m_PageHeight;
   CFX_Matrix m_PageMatrix;
   View* m_pView;
   std::unique_ptr<CPDF_PageRenderCache> m_pPageRender;
-  std::unique_ptr<CFX_Deletable> m_pRenderContext;
+  std::unique_ptr<CRenderContext> m_pRenderContext;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_