Remove CFX_PrivateData from CPDF_Page

fpdfsdk/include/fsdk_mgr.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 FPDFSDK_INCLUDE_FSDK_MGR_H_
 #define FPDFSDK_INCLUDE_FSDK_MGR_H_
 
 #include <map>
 #include <memory>
 #include <vector>
 
+#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "fpdfsdk/cfx_systemhandler.h"
 #include "fpdfsdk/include/fsdk_actionhandler.h"
 #include "fpdfsdk/include/fsdk_annothandler.h"
 #include "fpdfsdk/include/fsdk_baseannot.h"
 #include "fpdfsdk/include/fsdk_baseform.h"
 #include "fpdfsdk/include/fsdk_common.h"
 #include "fpdfsdk/include/fsdk_define.h"
 #include "public/fpdf_formfill.h"
 #include "public/fpdf_fwlevent.h"
@@ skipping 499 matching lines @@
   std::map<UnderlyingPageType*, CPDFSDK_PageView*> m_pageMap;
   UnderlyingDocumentType* m_pDoc;
   std::unique_ptr<CPDFSDK_InterForm> m_pInterForm;
   CPDFSDK_Annot* m_pFocusAnnot;
   CPDFDoc_Environment* m_pEnv;
   std::unique_ptr<CPDF_OCContext> m_pOccontent;
   FX_BOOL m_bChangeMask;
   FX_BOOL m_bBeingDestroyed;
 };
 
-class CPDFSDK_PageView final {
+class CPDFSDK_PageView final : public CPDF_Page::View {
  public:
   CPDFSDK_PageView(CPDFSDK_Document* pSDKDoc, UnderlyingPageType* page);
   ~CPDFSDK_PageView();
 
 #ifdef PDF_ENABLE_XFA
   void PageView_OnDraw(CFX_RenderDevice* pDevice,
                        CFX_Matrix* pUser2Device,
                        CPDF_RenderOptions* pOptions,
                        const FX_RECT& pClip);
 #else   // PDF_ENABLE_XFA
@@ skipping 86 matching lines @@
   FX_BOOL m_bTakeOverPage;
 #endif  // PDF_ENABLE_XFA
   FX_BOOL m_bEnterWidget;
   FX_BOOL m_bExitWidget;
   FX_BOOL m_bOnWidget;
   FX_BOOL m_bValid;
   FX_BOOL m_bLocked;
 };
 
 #endif  // FPDFSDK_INCLUDE_FSDK_MGR_H_