Use std::map as CPDF_Dictionary's underlying store.

core/include/fpdfdoc/fpdf_doc.h

 // 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_INCLUDE_FPDFDOC_FPDF_DOC_H_
 #define CORE_INCLUDE_FPDFDOC_FPDF_DOC_H_
 
 #include <map>
@@ skipping 280 matching lines @@
     SaveDocument,
     DocumentSaved,
     PrintDocument,
     DocumentPrinted
   };
 
   FX_BOOL ActionExist(AActionType eType) const;
 
   CPDF_Action GetAction(AActionType eType) const;
 
-  FX_POSITION GetStartPos() const;
-
-  CPDF_Action GetNextAction(FX_POSITION& pos, AActionType& eType) const;
-
   CPDF_Dictionary* m_pDict;
 };
 class CPDF_DocJSActions {
  public:
   explicit CPDF_DocJSActions(CPDF_Document* pDoc);
 
   int CountJSActions() const;
 
   CPDF_Action GetJSAction(int index, CFX_ByteString& csName) const;
 
@@ skipping 829 matching lines @@
   CFX_WideString GetCaption(const CFX_ByteStringC& csEntry) const;
 
   CPDF_Stream* GetIcon(const CFX_ByteStringC& csEntry) const;
 
   CPDF_Dictionary* const m_pDict;
 };
 
 CFX_WideString FILESPEC_EncodeFileName(const CFX_WideStringC& filepath);
 
 #endif  // CORE_INCLUDE_FPDFDOC_FPDF_DOC_H_