Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/BC_Dimension.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 2012 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_Dimension.h"
-#include "xfa/src/fxbarcode/barcode.h"
 #include "xfa/src/fxbarcode/datamatrix/BC_Encoder.h"
+
 CBC_Dimension::CBC_Dimension() {}
 CBC_Dimension::CBC_Dimension(int32_t width, int32_t height, int32_t& e) {
   if (width < 0 || height < 0) {
     e = BCExceptionHeightAndWidthMustBeAtLeast1;
   }
   m_width = width;
   m_height = height;
 }
 CBC_Dimension::~CBC_Dimension() {}
 int32_t CBC_Dimension::getWidth() {
   return m_width;
 }
 int32_t CBC_Dimension::getHeight() {
   return m_height;
 }
 int32_t CBC_Dimension::hashCode() {
   return m_width * 32713 + m_height;
 }
 CFX_WideString CBC_Dimension::toString() {
   return (FX_WCHAR)(m_width + (FX_WCHAR)'x' + m_height);
 }