Remove FXSYS_Div.

core/src/fxge/win32/fx_win32_gdipext.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 "core/include/fxge/fx_ge.h"
 
 #if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_
 #include <windows.h>
@@ skipping 955 matching lines @@
 }
 static GpPen* _GdipCreatePen(const CFX_GraphStateData* pGraphState,
                              const CFX_Matrix* pMatrix,
                              DWORD argb,
                              FX_BOOL bTextMode = FALSE) {
   CGdiplusExt& GdiplusExt =
       ((CWin32Platform*)CFX_GEModule::Get()->GetPlatformData())->m_GdiplusExt;
   FX_FLOAT width = pGraphState ? pGraphState->m_LineWidth : 1.0f;
   if (!bTextMode) {
     FX_FLOAT unit =
-        pMatrix
-            ? FXSYS_Div(1.0f, (pMatrix->GetXUnit() + pMatrix->GetYUnit()) / 2)
-            : 1.0f;
+        pMatrix ? 1.0f / ((pMatrix->GetXUnit() + pMatrix->GetYUnit()) / 2)
+                : 1.0f;
     if (width < unit) {
       width = unit;
     }
   }
   GpPen* pPen = NULL;
   CallFunc(GdipCreatePen1)((ARGB)argb, width, UnitWorld, &pPen);
   LineCap lineCap;
   DashCap dashCap = DashCapFlat;
   FX_BOOL bDashExtend = FALSE;
   switch (pGraphState->m_LineCap) {
@@ skipping 518 matching lines @@
                    dest_pitch);
     }
   }
   CFX_DIBitmap* pDIBitmap = _FX_WindowsDIB_LoadFromBuf(
       pInfo->pbmi, pData, pInfo->pbmi->bmiHeader.biBitCount == 32);
   FX_Free(pData);
   FreeDIBitmap(pInfo);
   return pDIBitmap;
 }
 #endif