Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.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 2013 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_PDF417CodewordDecoder.h"
 #include "xfa/src/fxbarcode/pdf417/BC_PDF417Common.h"
+
 #define SYMBOL_TABLE_Length 2787
 #define Float_MAX_VALUE 2147483647
+
 FX_FLOAT CBC_PDF417CodewordDecoder::RATIOS_TABLE[2787][8] = {{0}};
+
 CBC_PDF417CodewordDecoder::CBC_PDF417CodewordDecoder() {}
 CBC_PDF417CodewordDecoder::~CBC_PDF417CodewordDecoder() {}
 void CBC_PDF417CodewordDecoder::Initialize() {
   for (int32_t i = 0; i < SYMBOL_TABLE_Length; i++) {
     int32_t currentSymbol = CBC_PDF417Common::SYMBOL_TABLE[i];
     int32_t currentBit = currentSymbol & 0x1;
     for (int32_t j = 0; j < CBC_PDF417Common::BARS_IN_MODULE; j++) {
       FX_FLOAT size = 0.0f;
       while ((currentSymbol & 0x1) == currentBit) {
         size += 1.0f;
@@ skipping 66 matching lines @@
       FX_FLOAT diff = RATIOS_TABLE[j][k] - bitCountRatios[k];
       error += diff * diff;
     }
     if (error < bestMatchError) {
       bestMatchError = error;
       bestMatch = CBC_PDF417Common::SYMBOL_TABLE[j];
     }
   }
   return bestMatch;
 }