core/include/fdpfapi cleanup Part I.

core/include/fpdfapi/cpdf_reference.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_INCLUDE_FPDFAPI_CPDF_REFERENCE_H_
-#define CORE_INCLUDE_FPDFAPI_CPDF_REFERENCE_H_
-
-#include "core/include/fpdfapi/cpdf_object.h"
-
-class CPDF_IndirectObjectHolder;
-
-class CPDF_Reference : public CPDF_Object {
- public:
-  CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, int objnum);
-
-  // CPDF_Object.
-  Type GetType() const override;
-  CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override;
-  CPDF_Object* GetDirect() const override;
-  CFX_ByteString GetString() const override;
-  CFX_ByteStringC GetConstString() const override;
-  FX_FLOAT GetNumber() const override;
-  int GetInteger() const override;
-  CPDF_Dictionary* GetDict() const override;
-
-  // TODO(weili): check whether GetUnicodeText() and GetArray() are needed.
-  bool IsReference() const override;
-  CPDF_Reference* AsReference() override;
-  const CPDF_Reference* AsReference() const override;
-
-  CPDF_IndirectObjectHolder* GetObjList() const { return m_pObjList; }
-  FX_DWORD GetRefObjNum() const { return m_RefObjNum; }
-
-  void SetRef(CPDF_IndirectObjectHolder* pDoc, FX_DWORD objnum);
-
- protected:
-  ~CPDF_Reference() override;
-  CPDF_Object* SafeGetDirect() const {
-    CPDF_Object* obj = GetDirect();
-    if (!obj || obj->IsReference())
-      return nullptr;
-    return obj;
-  }
-
-  CPDF_IndirectObjectHolder* m_pObjList;
-  FX_DWORD m_RefObjNum;
-};
-
-#endif  // CORE_INCLUDE_FPDFAPI_CPDF_REFERENCE_H_