Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/datamatrix/BC_DataMatrixDetector.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 <algorithm>
 
 #include "xfa/src/fxbarcode/BC_ResultPoint.h"
-#include "xfa/src/fxbarcode/barcode.h"
 #include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
 #include "xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixDetector.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRDetectorResult.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRFinderPatternFinder.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRGridSampler.h"
+#include "xfa/src/fxbarcode/utils.h"
+
 const int32_t CBC_DataMatrixDetector::INTEGERS[5] = {0, 1, 2, 3, 4};
 CBC_DataMatrixDetector::CBC_DataMatrixDetector(CBC_CommonBitMatrix* image)
     : m_image(image), m_rectangleDetector(NULL) {}
 void CBC_DataMatrixDetector::Init(int32_t& e) {
   m_rectangleDetector = new CBC_WhiteRectangleDetector(m_image);
   m_rectangleDetector->Init(e);
   BC_EXCEPTION_CHECK_ReturnVoid(e);
 }
 CBC_DataMatrixDetector::~CBC_DataMatrixDetector() {
   if (m_rectangleDetector != NULL) {
@@ skipping 354 matching lines @@
       (bottomLeft->GetX() - topLeft->GetX()) *
           (topRight->GetY() - topLeft->GetY())) {
     CBC_ResultPoint* temp = topRight;
     topRight = bottomLeft;
     bottomLeft = temp;
   }
   (*patterns)[0] = bottomLeft;
   (*patterns)[1] = topLeft;
   (*patterns)[2] = topRight;
 }