Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/datamatrix/BC_DefaultPlacement.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 2006 Jeremias Maerki.
  *
  * 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/datamatrix/BC_DefaultPlacement.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_Encoder.h"
+
 CBC_DefaultPlacement::CBC_DefaultPlacement(CFX_WideString codewords,
                                            int32_t numcols,
                                            int32_t numrows) {
   m_codewords = codewords;
   m_numcols = numcols;
   m_numrows = numrows;
   m_bits.SetSize(numcols * numrows);
   for (int32_t i = 0; i < numcols * numrows; i++) {
     m_bits[i] = (uint8_t)2;
   }
@@ skipping 119 matching lines @@
 void CBC_DefaultPlacement::corner4(int32_t pos) {
   module(m_numrows - 1, 0, pos, 1);
   module(m_numrows - 1, m_numcols - 1, pos, 2);
   module(0, m_numcols - 3, pos, 3);
   module(0, m_numcols - 2, pos, 4);
   module(0, m_numcols - 1, pos, 5);
   module(1, m_numcols - 3, pos, 6);
   module(1, m_numcols - 2, pos, 7);
   module(1, m_numcols - 1, pos, 8);
 }