pdfium: Fix all -Wdelete-non-virtual-dtor violations on Mac.

core/include/fpdfapi/fpdf_parser.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 _FPDF_PARSER_
 #define _FPDF_PARSER_
 #ifndef _FX_BASIC_H_
 #include "../fxcrt/fx_ext.h"
@@ skipping 379 matching lines @@
 
     virtual FX_BOOL             IsFormStream(FX_DWORD objnum, FX_BOOL& bForm) = 0;
 };
 
 #define PDFPARSE_ERROR_SUCCESS          0
 #define PDFPARSE_ERROR_FILE                     1
 #define PDFPARSE_ERROR_FORMAT           2
 #define PDFPARSE_ERROR_PASSWORD         3
 #define PDFPARSE_ERROR_HANDLER          4
 #define PDFPARSE_ERROR_CERT                     5
-class CPDF_Parser : public IPDF_DocParser
+class CPDF_Parser FX_FINAL : public IPDF_DocParser
 {
 public:
 
     CPDF_Parser();
 
     ~CPDF_Parser();
 
     FX_DWORD                    StartParse(FX_LPCSTR filename, FX_BOOL bReParse = FALSE);
 
     FX_DWORD                    StartParse(FX_LPCWSTR filename, FX_BOOL bReParse = FALSE);
@@ skipping 527 matching lines @@
     PDF_DATAAVAIL_ACROFORM_SUBOBJECT,
     PDF_DATAAVAIL_PAGETREE,
     PDF_DATAAVAIL_PAGE,
     PDF_DATAAVAIL_PAGE_LATERLOAD,
     PDF_DATAAVAIL_RESOURCES,
     PDF_DATAAVAIL_DONE,
     PDF_DATAAVAIL_ERROR,
     PDF_DATAAVAIL_LOADALLFILE,
     PDF_DATAAVAIL_TRAILER_APPEND
 };
-class CPDF_DataAvail : public CFX_Object, public IPDF_DataAvail
+class CPDF_DataAvail FX_FINAL : public CFX_Object, public IPDF_DataAvail
 {
 public:
 
     CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
     ~CPDF_DataAvail();
 
     virtual FX_BOOL                             IsDocAvail(IFX_DownloadHints* pHints);
 
 
     virtual void                                SetDocument(CPDF_Document* pDoc);
@@ skipping 181 matching lines @@
 
     FX_BOOL                                     m_bCurPageDictLoadOK;
 
     CPDF_PageNode                       m_pageNodes;
 
     CFX_CMapDWordToDWord *      m_pageMapCheckState;
 
     CFX_CMapDWordToDWord *      m_pagesLoadState;
 };
 #endif