Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/datamatrix/BC_DataMatrixVersion.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 2007 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 <cstdint>
+
 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixVersion.h"
+#include "xfa/src/fxbarcode/utils.h"
+
 CFX_PtrArray* CBC_DataMatrixVersion::VERSIONS = NULL;
+
 void CBC_DataMatrixVersion::Initialize() {
   VERSIONS = new CFX_PtrArray();
 }
 void CBC_DataMatrixVersion::Finalize() {
   for (int32_t i = 0; i < VERSIONS->GetSize(); i++) {
     delete ((CBC_DataMatrixVersion*)(VERSIONS->GetAt(i)));
   }
   VERSIONS->RemoveAll();
   delete VERSIONS;
 }
@@ skipping 127 matching lines @@
     if (((CBC_DataMatrixVersion*)((*VERSIONS)[i]))->m_symbolSizeRows ==
             numRows &&
         ((CBC_DataMatrixVersion*)((*VERSIONS)[i]))->m_symbolSizeColumns ==
             numColumns) {
       return (CBC_DataMatrixVersion*)(*VERSIONS)[i];
     }
   }
   e = BCExceptionNotFound;
   return NULL;
 }