Remove the GetCaption dataprovider method

xfa/fwl/core/cfwl_barcode.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_FWL_CORE_CFWL_BARCODE_H_
 #define XFA_FWL_CORE_CFWL_BARCODE_H_
 
 #include "xfa/fwl/core/cfwl_edit.h"
 #include "xfa/fwl/core/fwl_error.h"
 #include "xfa/fwl/core/ifwl_barcode.h"
 
 class CFWL_Barcode : public CFWL_Edit, public IFWL_Barcode::DataProvider {
  public:
   explicit CFWL_Barcode(const IFWL_App* pApp);
   ~CFWL_Barcode() override;
 
   void Initialize();
 
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_Barcode::DataProvider
   BC_CHAR_ENCODING GetCharEncoding() const override;
   int32_t GetModuleHeight() const override;
   int32_t GetModuleWidth() const override;
   int32_t GetDataLength() const override;
   bool GetCalChecksum() const override;
   bool GetPrintChecksum() const override;
   BC_TEXT_LOC GetTextLocation() const override;
   int32_t GetWideNarrowRatio() const override;
   FX_CHAR GetStartChar() const override;
@@ skipping 29 matching lines @@
   BC_TEXT_LOC m_eTextLocation;
   int32_t m_nWideNarrowRatio;
   FX_CHAR m_cStartChar;
   FX_CHAR m_cEndChar;
   int32_t m_nECLevel;
   bool m_bTruncated;
   uint32_t m_dwAttributeMask;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_BARCODE_H_