Remove FX_DWORD from XFA.

xfa/fwl/lightwidget/scrollbar.cpp

Index: xfa/fwl/lightwidget/scrollbar.cpp
diff --git a/xfa/fwl/lightwidget/scrollbar.cpp b/xfa/fwl/lightwidget/scrollbar.cpp
index a0704831832d8e9495c65a95cdb83b6272528aab..62f2ffd1e54338a446f05d09647f9d73e3b8b940 100644
--- a/xfa/fwl/lightwidget/scrollbar.cpp
+++ b/xfa/fwl/lightwidget/scrollbar.cpp
@@ -84,7 +84,7 @@ FWL_ERR CFWL_ScrollBar::SetTrackPos(FX_FLOAT fTrackPos) {
     return FWL_ERR_Indefinite;
   return static_cast<IFWL_ScrollBar*>(m_pIface)->SetTrackPos(fTrackPos);
 }
-FX_BOOL CFWL_ScrollBar::DoScroll(FX_DWORD dwCode, FX_FLOAT fPos) {
+FX_BOOL CFWL_ScrollBar::DoScroll(uint32_t dwCode, FX_FLOAT fPos) {
   if (!m_pIface)
     return FALSE;
   return static_cast<IFWL_ScrollBar*>(m_pIface)->DoScroll(dwCode, fPos);