Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/datamatrix/BC_ASCIIEncoder.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 2006-2007 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/BC_Dimension.h"
-#include "xfa/src/fxbarcode/barcode.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_ASCIIEncoder.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_Encoder.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_EncoderContext.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_HighLevelEncoder.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_SymbolInfo.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_SymbolShapeHint.h"
+
 CBC_ASCIIEncoder::CBC_ASCIIEncoder() {}
 CBC_ASCIIEncoder::~CBC_ASCIIEncoder() {}
 int32_t CBC_ASCIIEncoder::getEncodingMode() {
   return ASCII_ENCODATION;
 }
 void CBC_ASCIIEncoder::Encode(CBC_EncoderContext& context, int32_t& e) {
   int32_t n = CBC_HighLevelEncoder::determineConsecutiveDigitCount(
       context.m_msg, context.m_pos);
   if (n >= 2) {
     FX_WCHAR code =
@@ skipping 48 matching lines @@
                                              FX_WCHAR digit2,
                                              int32_t& e) {
   if (CBC_HighLevelEncoder::isDigit(digit1) &&
       CBC_HighLevelEncoder::isDigit(digit2)) {
     int32_t num = (digit1 - 48) * 10 + (digit2 - 48);
     return (FX_WCHAR)(num + 130);
   }
   e = BCExceptionIllegalArgumentNotGigits;
   return 0;
 }