Extern in .cpp file is a code smell, part 2.

core/src/fxge/dib/fx_dib_engine.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
 
+#include <limits.h>
+
 #include "../../../include/fxge/fx_dib.h"
 #include "../../../include/fxge/fx_ge.h"
 #include "dib_int.h"
-#include <limits.h>
-extern int SDP_Table[513];
+
 void CWeightTable::Calc(int dest_len,
                         int dest_min,
                         int dest_max,
                         int src_len,
                         int src_min,
                         int src_max,
                         int flags) {
   FX_Free(m_pWeightTables);
   m_pWeightTables = NULL;
   double scale, base;
@@ skipping 888 matching lines @@
                                   m_bFlipX, m_ClipRect.left, result_width);
     if (m_pMaskScanline) {
       m_pSource->m_pAlphaMask->DownSampleScanline(
           src_y, m_pMaskScanline, 1, m_DestWidth, m_bFlipX, m_ClipRect.left,
           result_width);
     }
     m_pDest->ComposeScanline(dest_y, m_pScanline, m_pMaskScanline);
   }
   return FALSE;
 }