Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/oned/BC_OnedUPCAReader.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 2008 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
+#include "core/include/fxcrt/fx_basic.h"
 #include "xfa/src/fxbarcode/BC_Reader.h"
-#include "xfa/src/fxbarcode/barcode.h"
 #include "xfa/src/fxbarcode/oned/BC_OneDReader.h"
 #include "xfa/src/fxbarcode/oned/BC_OneDimReader.h"
 #include "xfa/src/fxbarcode/oned/BC_OnedEAN13Reader.h"
 #include "xfa/src/fxbarcode/oned/BC_OnedUPCAReader.h"
+#include "xfa/src/fxbarcode/utils.h"
+
 CBC_OnedUPCAReader::CBC_OnedUPCAReader() {
   m_ean13Reader = NULL;
 }
 void CBC_OnedUPCAReader::Init() {
   m_ean13Reader = new CBC_OnedEAN13Reader;
 }
 CBC_OnedUPCAReader::~CBC_OnedUPCAReader() {
   if (m_ean13Reader != NULL) {
     delete m_ean13Reader;
   }
@@ skipping 50 matching lines @@
                                                      int32_t& e) {
   if (result[0] == '0') {
     result.Delete(0);
     return result;
   } else {
     e = BCExceptionFormatException;
     return "";
   }
   return "";
 }