Revert of Move parser pointer to CPDF_Document

core/fpdfapi/fpdf_parser/include/cpdf_object.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_PARSER_INCLUDE_CPDF_OBJECT_H_
 #define CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_OBJECT_H_
 
 #include "core/fxcrt/include/fx_string.h"
@@ skipping 61 matching lines @@
   virtual CPDF_Number* AsNumber();
   virtual const CPDF_Number* AsNumber() const;
   virtual CPDF_Reference* AsReference();
   virtual const CPDF_Reference* AsReference() const;
   virtual CPDF_Stream* AsStream();
   virtual const CPDF_Stream* AsStream() const;
   virtual CPDF_String* AsString();
   virtual const CPDF_String* AsString() const;
 
  protected:
-  friend class CPDF_Document;
-  friend class CPDF_IndirectObjectHolder;
-  friend class CPDF_Parser;
-
   CPDF_Object() : m_ObjNum(0), m_GenNum(0) {}
   virtual ~CPDF_Object();
   void Destroy() { delete this; }
 
   uint32_t m_ObjNum;
   uint32_t m_GenNum;
 
+  friend class CPDF_IndirectObjectHolder;
+  friend class CPDF_Parser;
+
  private:
   CPDF_Object(const CPDF_Object& src) {}
 };
 
 inline CPDF_Boolean* ToBoolean(CPDF_Object* obj) {
   return obj ? obj->AsBoolean() : nullptr;
 }
 
 inline const CPDF_Boolean* ToBoolean(const CPDF_Object* obj) {
   return obj ? obj->AsBoolean() : nullptr;
@@ skipping 48 matching lines @@
 
 inline CPDF_Stream* ToStream(CPDF_Object* obj) {
   return obj ? obj->AsStream() : nullptr;
 }
 
 inline const CPDF_Stream* ToStream(const CPDF_Object* obj) {
   return obj ? obj->AsStream() : nullptr;
 }
 
 #endif  // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_OBJECT_H_