Remove include only barcode.h and IWYU.

xfa/src/fxbarcode/BC_BufferedImageLuminanceSource.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 "core/include/fxcodec/fx_codec.h"
 #include "xfa/src/fxbarcode/BC_BufferedImageLuminanceSource.h"
 #include "xfa/src/fxbarcode/BC_LuminanceSource.h"
-#include "xfa/src/fxbarcode/barcode.h"
+#include "xfa/src/fxbarcode/utils.h"
+
 class CBC_Pause : public IFX_Pause {
  public:
   virtual FX_BOOL NeedToPauseNow() { return TRUE; }
 };
 static CFX_DIBitmap* CreateDIBSource(IFX_FileRead* fileread) {
   CFX_DIBitmap* bitmap = NULL;
   CCodec_ModuleMgr* pCodecMgr = NULL;
   ICodec_ProgressiveDecoder* pImageCodec = NULL;
   pCodecMgr = new CCodec_ModuleMgr();
   pImageCodec = pCodecMgr->CreateProgressiveDecoder();
@@ skipping 124 matching lines @@
       int32_t pixel = rgb[offset + x];
       int32_t luminance =
           (306 * ((pixel >> 16) & 0xFF) + 601 * ((pixel >> 8) & 0xFF) +
            117 * (pixel & 0xFF)) >>
           10;
       (*matirx)[offset + x] = (uint8_t)luminance;
     }
   }
   return matirx;
 }