Merge to XFA: Remove an extra "const" in fpdf_objects.

core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp

 // 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
 
 #include "core/include/fpdfapi/fpdf_objects.h"
 
 #include <algorithm>
 
@@ skipping 28 matching lines @@
       delete AsDictionary();
       break;
     case PDFOBJ_STREAM:
       delete AsStream();
       break;
     default:
       delete this;
   }
 }
 
-const CPDF_Object* const CPDF_Object::GetBasicObject() const {
+const CPDF_Object* CPDF_Object::GetBasicObject() const {
   const CPDF_Reference* pRef = AsReference();
   if (!pRef) {
     // This is not an indirect reference.
     return this;
   }
   if (!pRef->m_pObjList)
     return nullptr;
   return pRef->m_pObjList->GetIndirectObject(pRef->GetRefObjNum(), nullptr);
 }
 
@@ skipping 1038 matching lines @@
       pObj->Destroy();
       return FALSE;
     }
     it->second->Destroy();
   }
   pObj->m_ObjNum = objnum;
   m_IndirectObjs[objnum] = pObj;
   m_LastObjNum = std::max(m_LastObjNum, objnum);
   return TRUE;
 }