Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.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 2012 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 "xfa/src/fxbarcode/barcode.h"
 #include "xfa/src/fxbarcode/pdf417/BC_PDF417Common.h"
 #include "xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusGF.h"
 #include "xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusPoly.h"
+#include "xfa/src/fxbarcode/utils.h"
+
 CBC_PDF417ECModulusGF* CBC_PDF417ECModulusGF::PDF417_GF = NULL;
 void CBC_PDF417ECModulusGF::Initialize(int32_t& e) {
   PDF417_GF =
       new CBC_PDF417ECModulusGF(CBC_PDF417Common::NUMBER_OF_CODEWORDS, 3, e);
 }
 void CBC_PDF417ECModulusGF::Finalize() {
   delete PDF417_GF;
 }
 CBC_PDF417ECModulusGF::CBC_PDF417ECModulusGF(int32_t modulus,
                                              int32_t generator,
@@ skipping 73 matching lines @@
 }
 int32_t CBC_PDF417ECModulusGF::multiply(int32_t a, int32_t b) {
   if (a == 0 || b == 0) {
     return 0;
   }
   return m_expTable[(m_logTable[a] + m_logTable[b]) % (m_modulus - 1)];
 }
 int32_t CBC_PDF417ECModulusGF::getSize() {
   return m_modulus;
 }