Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/oned/BC_OnedUPCAWriter.cpp

 // 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
 // Original code is licensed as follows:
 /*
  * Copyright 2010 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 87 matching lines @@
     return nullptr;
   }
   CFX_ByteString toEAN13String = '0' + contents;
   m_iDataLenth = 13;
   uint8_t* ret = m_subWriter->Encode(toEAN13String, BCFORMAT_EAN_13, outWidth,
                                      outHeight, hints, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return ret;
 }
 
+uint8_t* CBC_OnedUPCAWriter::Encode(const CFX_ByteString& contents,
+                                    int32_t& outLength,
+                                    int32_t& e) {
+  return nullptr;
+}
+
 void CBC_OnedUPCAWriter::ShowChars(const CFX_WideStringC& contents,
                                    CFX_DIBitmap* pOutBitmap,
                                    CFX_RenderDevice* device,
                                    const CFX_Matrix* matrix,
                                    int32_t barWidth,
                                    int32_t multiple,
                                    int32_t& e) {
   if (!device && !pOutBitmap) {
     e = BCExceptionIllegalArgument;
     return;
@@ skipping 152 matching lines @@
   FX_Free(pCharPos);
 }
 
 void CBC_OnedUPCAWriter::RenderResult(const CFX_WideStringC& contents,
                                       uint8_t* code,
                                       int32_t codeLength,
                                       FX_BOOL isDevice,
                                       int32_t& e) {
   CBC_OneDimWriter::RenderResult(contents, code, codeLength, isDevice, e);
 }