Remove FX_DWORD from XFA.

xfa/fgas/crt/fgas_system.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 "xfa/fgas/crt/fgas_system.h"
 
 #include <algorithm>
 
@@ skipping 43 matching lines @@
   return iLen;
 #endif
 }
 
 FX_BOOL FX_fsetsize(FXSYS_FILE* file, int32_t size) {
   FXSYS_assert(file != NULL);
 #if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_
   return _chsize(_fileno(file), size) == 0;
 #elif _FX_OS_ == _FX_WIN32_MOBILE_
   HANDLE hFile = _fileno(file);
-  FX_DWORD dwPos = ::SetFilePointer(hFile, 0, 0, FILE_CURRENT);
+  uint32_t dwPos = ::SetFilePointer(hFile, 0, 0, FILE_CURRENT);
   ::SetFilePointer(hFile, size, 0, FILE_BEGIN);
   FX_BOOL bRet = ::SetEndOfFile(hFile);
   ::SetFilePointer(hFile, (int32_t)dwPos, 0, FILE_BEGIN);
   return bRet;
 #else
   return FALSE;
 #endif
 }
 
 FX_FLOAT FX_wcstof(const FX_WCHAR* pwsStr, int32_t iLength, int32_t* pUsedLen) {
@@ skipping 33 matching lines @@
       } else {
         break;
       }
     }
   }
   if (pUsedLen) {
     *pUsedLen = iUsedLen;
   }
   return bNegtive ? -fValue : fValue;
 }