Use some FXSYS methods instead of duplicating

xfa/fxfa/parser/cxfa_data.cpp

 // Copyright 2016 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/fxfa/parser/cxfa_data.h"
 
+#include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fxfa/parser/xfa_object.h"
 
 // Static.
 FX_ARGB CXFA_Data::ToColor(const CFX_WideStringC& wsValue) {
   uint8_t r = 0, g = 0, b = 0;
   if (wsValue.GetLength() == 0)
     return 0xff000000;
 
   int cc = 0;
   const FX_WCHAR* str = wsValue.c_str();
   int len = wsValue.GetLength();
-  while (XFA_IsSpace(str[cc]) && cc < len)
+  while (FXSYS_iswspace(str[cc]) && cc < len)
     cc++;
 
   if (cc >= len)
     return 0xff000000;
 
   while (cc < len) {
-    if (str[cc] == ',' || !XFA_IsDigit(str[cc]))
+    if (str[cc] == ',' || !FXSYS_isDecimalDigit(str[cc]))
       break;
 
     r = r * 10 + str[cc] - '0';
     cc++;
   }
   if (cc < len && str[cc] == ',') {
     cc++;
-    while (XFA_IsSpace(str[cc]) && cc < len)
+    while (FXSYS_iswspace(str[cc]) && cc < len)
       cc++;
 
     while (cc < len) {
-      if (str[cc] == ',' || !XFA_IsDigit(str[cc]))
+      if (str[cc] == ',' || !FXSYS_isDecimalDigit(str[cc]))
         break;
 
       g = g * 10 + str[cc] - '0';
       cc++;
     }
     if (cc < len && str[cc] == ',') {
       cc++;
-      while (XFA_IsSpace(str[cc]) && cc < len)
+      while (FXSYS_iswspace(str[cc]) && cc < len)
         cc++;
 
       while (cc < len) {
-        if (str[cc] == ',' || !XFA_IsDigit(str[cc]))
+        if (str[cc] == ',' || !FXSYS_isDecimalDigit(str[cc]))
           break;
 
         b = b * 10 + str[cc] - '0';
         cc++;
       }
     }
   }
   return (0xff << 24) | (r << 16) | (g << 8) | b;
 }
 
 XFA_Element CXFA_Data::GetElementType() const {
   return m_pNode ? m_pNode->GetElementType() : XFA_Element::Unknown;
 }
 
 FX_BOOL CXFA_Data::TryMeasure(XFA_ATTRIBUTE eAttr,
                               FX_FLOAT& fValue,
                               FX_BOOL bUseDefault) const {
   CXFA_Measurement ms;
   if (m_pNode->TryMeasure(eAttr, ms, bUseDefault)) {
     fValue = ms.ToUnit(XFA_UNIT_Pt);
     return TRUE;
   }
   return FALSE;
 }
 
 FX_BOOL CXFA_Data::SetMeasure(XFA_ATTRIBUTE eAttr, FX_FLOAT fValue) {
   CXFA_Measurement ms(fValue, XFA_UNIT_Pt);
   return m_pNode->SetMeasure(eAttr, ms);
 }