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diff --git a/fpdfsdk/fpdfxfa/fpdfxfa_page.h b/fpdfsdk/fpdfxfa/fpdfxfa_page.h
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+++ b/fpdfsdk/fpdfxfa/fpdfxfa_page.h
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+// 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_FPDFXFA_FPDFXFA_PAGE_H_
+#define FPDFSDK_FPDFXFA_FPDFXFA_PAGE_H_
+
+#include <memory>
+
+#include "core/fxcrt/fx_system.h"
+
+class CFX_Matrix;
+class CPDFXFA_Document;
+class CPDF_Dictionary;
+class CPDF_Page;
+class CXFA_FFPageView;
+
+class CPDFXFA_Page {
+ public:
+  CPDFXFA_Page(CPDFXFA_Document* pDoc, int page_index);
+
+  void Retain() { m_iRef++; }
+  void Release() {
+    if (--m_iRef <= 0)
+      delete this;
+  }
+
+  FX_BOOL LoadPage();
+  FX_BOOL LoadPDFPage(CPDF_Dictionary* pageDict);
+  CPDFXFA_Document* GetDocument() const { return m_pDocument; }
+  int GetPageIndex() const { return m_iPageIndex; }
+  CPDF_Page* GetPDFPage() const { return m_pPDFPage.get(); }
+  CXFA_FFPageView* GetXFAPageView() const { return m_pXFAPageView; }
+
+  void SetXFAPageView(CXFA_FFPageView* pPageView) {
+    m_pXFAPageView = pPageView;
+  }
+
+  FX_FLOAT GetPageWidth() const;
+  FX_FLOAT GetPageHeight() const;
+
+  void DeviceToPage(int start_x,
+                    int start_y,
+                    int size_x,
+                    int size_y,
+                    int rotate,
+                    int device_x,
+                    int device_y,
+                    double* page_x,
+                    double* page_y);
+  void PageToDevice(int start_x,
+                    int start_y,
+                    int size_x,
+                    int size_y,
+                    int rotate,
+                    double page_x,
+                    double page_y,
+                    int* device_x,
+                    int* device_y);
+
+  void GetDisplayMatrix(CFX_Matrix& matrix,
+                        int xPos,
+                        int yPos,
+                        int xSize,
+                        int ySize,
+                        int iRotate) const;
+
+ protected:
+  // Refcounted class.
+  ~CPDFXFA_Page();
+
+  FX_BOOL LoadPDFPage();
+  FX_BOOL LoadXFAPageView();
+
+ private:
+  std::unique_ptr<CPDF_Page> m_pPDFPage;
+  CXFA_FFPageView* m_pXFAPageView;
+  CPDFXFA_Document* const m_pDocument;
+  const int m_iPageIndex;
+  int m_iRef;
+};
+
+#endif  // FPDFSDK_FPDFXFA_FPDFXFA_PAGE_H_