Remove the document tagged code as it is unused.

core/fpdfdoc/tagged_int.h

Index: core/fpdfdoc/tagged_int.h
diff --git a/core/fpdfdoc/tagged_int.h b/core/fpdfdoc/tagged_int.h
deleted file mode 100644
index 354a93cb76f3f4c70f5c3d9775e5b5d2ad9bc47f..0000000000000000000000000000000000000000
--- a/core/fpdfdoc/tagged_int.h
+++ /dev/null
@@ -1,107 +0,0 @@
-// 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 CORE_FPDFDOC_TAGGED_INT_H_
-#define CORE_FPDFDOC_TAGGED_INT_H_
-
-#include <map>
-#include <memory>
-#include <vector>
-
-#include "core/fpdfdoc/include/fpdf_tagged.h"
-#include "core/fxcrt/include/cfx_retain_ptr.h"
-#include "third_party/base/stl_util.h"
-
-class CPDF_StructElementImpl;
-
-class CPDF_StructTreeImpl final : public IPDF_StructTree {
- public:
-  explicit CPDF_StructTreeImpl(const CPDF_Document* pDoc);
-  ~CPDF_StructTreeImpl() override;
-
-  // IPDF_StructTree:
-  int CountTopElements() const override;
-  IPDF_StructElement* GetTopElement(int i) const override;
-
-  void LoadDocTree();
-  void LoadPageTree(const CPDF_Dictionary* pPageDict);
-  CPDF_StructElementImpl* AddPageNode(
-      CPDF_Dictionary* pElement,
-      std::map<CPDF_Dictionary*, CPDF_StructElementImpl*>& map,
-      int nLevel = 0);
-  FX_BOOL AddTopLevelNode(CPDF_Dictionary* pDict,
-                          CPDF_StructElementImpl* pElement);
-
- protected:
-  const CPDF_Dictionary* const m_pTreeRoot;
-  const CPDF_Dictionary* const m_pRoleMap;
-  const CPDF_Dictionary* m_pPage;
-  std::vector<CFX_RetainPtr<CPDF_StructElementImpl>> m_Kids;
-
-  friend class CPDF_StructElementImpl;
-};
-
-class CPDF_StructElementImpl final : public IPDF_StructElement {
- public:
-  CPDF_StructElementImpl(CPDF_StructTreeImpl* pTree,
-                         CPDF_StructElementImpl* pParent,
-                         CPDF_Dictionary* pDict);
-
-  // IPDF_StructElement
-  IPDF_StructTree* GetTree() const override;
-  const CFX_ByteString& GetType() const override;
-  IPDF_StructElement* GetParent() const override;
-  CPDF_Dictionary* GetDict() const override;
-  int CountKids() const override;
-  const CPDF_StructKid& GetKid(int index) const override;
-  CPDF_Object* GetAttr(const CFX_ByteStringC& owner,
-                       const CFX_ByteStringC& name,
-                       FX_BOOL bInheritable = FALSE,
-                       FX_FLOAT fLevel = 0.0F) override;
-  CFX_ByteString GetName(const CFX_ByteStringC& owner,
-                         const CFX_ByteStringC& name,
-                         const CFX_ByteStringC& default_value,
-                         FX_BOOL bInheritable = FALSE,
-                         int subindex = -1) override;
-  FX_ARGB GetColor(const CFX_ByteStringC& owner,
-                   const CFX_ByteStringC& name,
-                   FX_ARGB default_value,
-                   FX_BOOL bInheritable = FALSE,
-                   int subindex = -1) override;
-  FX_FLOAT GetNumber(const CFX_ByteStringC& owner,
-                     const CFX_ByteStringC& name,
-                     FX_FLOAT default_value,
-                     FX_BOOL bInheritable = FALSE,
-                     int subindex = -1) override;
-  int GetInteger(const CFX_ByteStringC& owner,
-                 const CFX_ByteStringC& name,
-                 int default_value,
-                 FX_BOOL bInheritable = FALSE,
-                 int subindex = -1) override;
-
-  void LoadKids(CPDF_Dictionary* pDict);
-  void LoadKid(uint32_t PageObjNum, CPDF_Object* pObj, CPDF_StructKid* pKid);
-  CPDF_Object* GetAttr(const CFX_ByteStringC& owner,
-                       const CFX_ByteStringC& name,
-                       FX_BOOL bInheritable,
-                       int subindex);
-  CPDF_StructElementImpl* Retain();
-  void Release();
-
- protected:
-  ~CPDF_StructElementImpl() override;
-
-  int m_RefCount;
-  CPDF_StructTreeImpl* const m_pTree;
-  CPDF_StructElementImpl* const m_pParent;
-  CPDF_Dictionary* const m_pDict;
-  CFX_ByteString m_Type;
-  std::vector<CPDF_StructKid> m_Kids;
-
-  friend class CPDF_StructTreeImpl;
-};
-
-#endif  // CORE_FPDFDOC_TAGGED_INT_H_