Clean up CPDF_Page.

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_Dictionary;
 class CPDF_Object;
 class CPDF_PageRenderCache;
-class CPDF_ParseOptions;
-
-CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict,
-                                 const CFX_ByteStringC& name);
 
 class CPDF_Page : public CPDF_PageObjectHolder, public CFX_PrivateData {
  public:
-  CPDF_Page();
+  CPDF_Page(CPDF_Document* pDocument,
+            CPDF_Dictionary* pPageDict,
+            bool bPageCache);
   ~CPDF_Page();
 
-  void Load(CPDF_Document* pDocument,
-            CPDF_Dictionary* pPageDict,
-            FX_BOOL bPageCache = TRUE);
-
-  void ParseContent(CPDF_ParseOptions* pOptions);
+  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_ByteStringC& name) const;
-  CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender; }
+  CPDF_Object* GetPageAttr(const CFX_ByteString& name) const;
+  CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender.get(); }
 
  protected:
   friend class CPDF_ContentParser;
 
-  void StartParse(CPDF_ParseOptions* pOptions);
+  void StartParse();
 
   FX_FLOAT m_PageWidth;
   FX_FLOAT m_PageHeight;
   CFX_Matrix m_PageMatrix;
-  CPDF_PageRenderCache* m_pPageRender;
+  std::unique_ptr<CPDF_PageRenderCache> m_pPageRender;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_