Organize barcode codes into modules.

xfa/src/fxbarcode/src/include/BC_PDF417Codeword.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 _BC_CODEWORD_H_
-#define _BC_CODEWORD_H_
-class CBC_Codeword;
-class CBC_Codeword : public CFX_Object
-{
-public:
-    CBC_Codeword(FX_INT32 startX, FX_INT32 endX, FX_INT32 bucket, FX_INT32 value);
-    virtual ~CBC_Codeword();
-    FX_BOOL hasValidRowNumber() ;
-    FX_BOOL isValidRowNumber(FX_INT32 rowNumber);
-    void setRowNumberAsRowIndicatorColumn();
-    FX_INT32 getWidth();
-    FX_INT32 getStartX();
-    FX_INT32 getEndX();
-    FX_INT32 getBucket();
-    FX_INT32 getValue();
-    FX_INT32 getRowNumber();
-    void setRowNumber(FX_INT32 rowNumber);
-    CFX_ByteString toString();
-private:
-    static FX_INT32 BARCODE_ROW_UNKNOWN;
-    FX_INT32 m_startX;
-    FX_INT32 m_endX;
-    FX_INT32 m_bucket;
-    FX_INT32 m_value;
-    FX_INT32 m_rowNumber;
-};
-#endif