Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/datamatrix/BC_HighLevelEncoder.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 XFA_FXBARCODE_DATAMATRIX_BC_HIGHLEVELENCODER_H_
 #define XFA_FXBARCODE_DATAMATRIX_BC_HIGHLEVELENCODER_H_
 
 #include "xfa/fxbarcode/datamatrix/BC_SymbolShapeHint.h"
 
 #define ASCII_ENCODATION 0
 #define C40_ENCODATION 1
 #define TEXT_ENCODATION 2
 #define X12_ENCODATION 3
 #define EDIFACT_ENCODATION 4
 #define BASE256_ENCODATION 5
 
 class CBC_HighLevelEncoder : public CBC_SymbolShapeHint {
  public:
   CBC_HighLevelEncoder();
-  virtual ~CBC_HighLevelEncoder();
+  ~CBC_HighLevelEncoder() override;
+
   CFX_ByteArray& getBytesForMessage(CFX_WideString msg);
   static CFX_WideString encodeHighLevel(CFX_WideString msg,
                                         CFX_WideString ecLevel,
                                         int32_t& e);
   static CFX_WideString encodeHighLevel(CFX_WideString msg,
                                         CFX_WideString ecLevel,
                                         SymbolShapeHint shape,
                                         CBC_Dimension* minSize,
                                         CBC_Dimension* maxSize,
                                         int32_t& e);
@@ skipping 34 matching lines @@
   static int32_t getMinimumCount(CFX_ByteArray& mins);
   static FX_BOOL isNativeC40(FX_WCHAR ch);
   static FX_BOOL isNativeText(FX_WCHAR ch);
   static FX_BOOL isNativeX12(FX_WCHAR ch);
   static FX_BOOL isX12TermSep(FX_WCHAR ch);
   static FX_BOOL isNativeEDIFACT(FX_WCHAR ch);
   static FX_BOOL isSpecialB256(FX_WCHAR ch);
 };
 
 #endif  // XFA_FXBARCODE_DATAMATRIX_BC_HIGHLEVELENCODER_H_