Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.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 2009 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/BC_Binarizer.h"
 #include "xfa/src/fxbarcode/BC_LuminanceSource.h"
-#include "xfa/src/fxbarcode/barcode.h"
 #include "xfa/src/fxbarcode/common/BC_CommonBitArray.h"
 #include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
 #include "xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.h"
+#include "xfa/src/fxbarcode/utils.h"
+
 const int32_t LUMINANCE_BITS = 5;
 const int32_t LUMINANCE_SHIFT = 8 - LUMINANCE_BITS;
 const int32_t LUMINANCE_BUCKETS = 1 << LUMINANCE_BITS;
+
 CBC_GlobalHistogramBinarizer::CBC_GlobalHistogramBinarizer(
     CBC_LuminanceSource* source)
     : CBC_Binarizer(source) {}
 CBC_GlobalHistogramBinarizer::~CBC_GlobalHistogramBinarizer() {}
 CBC_CommonBitArray* CBC_GlobalHistogramBinarizer::GetBlackRow(
     int32_t y,
     CBC_CommonBitArray* row,
     int32_t& e) {
   CBC_LuminanceSource* source = GetLuminanceSource();
   int32_t width = source->GetWidth();
@@ skipping 118 matching lines @@
     int32_t fromFirst = x - firstPeak;
     int32_t score = fromFirst * fromFirst * (secondPeak - x) *
                     (maxBucketCount - buckets[x]);
     if (score > bestValleyScore) {
       bestValley = x;
       bestValleyScore = score;
     }
   }
   return bestValley << LUMINANCE_SHIFT;
 }