Delete unused methods in CPDF_Parser

core/fpdfapi/fpdf_parser/cpdf_parser.cpp

 // 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
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_parser.h"
 
 #include <vector>
 
@@ skipping 1112 matching lines @@
       ToReference(m_pTrailer ? m_pTrailer->GetObjectFor("Root") : nullptr);
   return pRef ? pRef->GetRefObjNum() : 0;
 }
 
 uint32_t CPDF_Parser::GetInfoObjNum() {
   CPDF_Reference* pRef =
       ToReference(m_pTrailer ? m_pTrailer->GetObjectFor("Info") : nullptr);
   return pRef ? pRef->GetRefObjNum() : 0;
 }
 
-FX_BOOL CPDF_Parser::IsFormStream(uint32_t objnum, FX_BOOL& bForm) {
-  bForm = FALSE;
-  if (!IsValidObjectNumber(objnum))
-    return TRUE;
-
-  if (GetObjectType(objnum) == 0)
-    return TRUE;
-
-  if (GetObjectType(objnum) == 2)
-    return TRUE;
-
-  FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
-  auto it = m_SortedOffset.find(pos);
-  if (it == m_SortedOffset.end())
-    return TRUE;
-
-  if (++it == m_SortedOffset.end())
-    return FALSE;
-
-  FX_FILESIZE size = *it - pos;
-  FX_FILESIZE SavedPos = m_pSyntax->SavePos();
-  m_pSyntax->RestorePos(pos);
-
-  const char kFormStream[] = "/Form\0stream";
-  const CFX_ByteStringC kFormStreamStr(kFormStream, sizeof(kFormStream) - 1);
-  bForm = m_pSyntax->SearchMultiWord(kFormStreamStr, TRUE, size) == 0;
-  m_pSyntax->RestorePos(SavedPos);
-  return TRUE;
-}
-
 CPDF_Object* CPDF_Parser::ParseIndirectObject(
     CPDF_IndirectObjectHolder* pObjList,
     uint32_t objnum) {
   if (!IsValidObjectNumber(objnum))
     return nullptr;
 
   // Prevent circular parsing the same object.
   if (pdfium::ContainsKey(m_ParsingObjNums, objnum))
     return nullptr;
 
@@ skipping 485 matching lines @@
   if (!LoadLinearizedAllCrossRefV4(m_LastXRefOffset, m_dwXrefStartObjNum) &&
       !LoadLinearizedAllCrossRefV5(m_LastXRefOffset)) {
     m_LastXRefOffset = 0;
     m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum;
     return FORMAT_ERROR;
   }
 
   m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum;
   return SUCCESS;
 }