Convert XFA_ELEMENT to an enum class

xfa/fxfa/parser/cxfa_box.cpp

Index: xfa/fxfa/parser/cxfa_box.cpp
diff --git a/xfa/fxfa/parser/cxfa_box.cpp b/xfa/fxfa/parser/cxfa_box.cpp
index fc572017506597191a3e79fc4cef35064bb037b5..cb5cf7f6b9a3652ab03385cb464b3fe5bddbe1f6 100644
--- a/xfa/fxfa/parser/cxfa_box.cpp
+++ b/xfa/fxfa/parser/cxfa_box.cpp
@@ -22,7 +22,7 @@ void GetStrokesInternal(CXFA_Node* pNode,
   int32_t i, j;
   for (i = 0, j = 0; i < 4; i++) {
     CXFA_Corner corner =
-        CXFA_Corner(pNode->GetProperty(i, XFA_ELEMENT_Corner, i == 0));
+        CXFA_Corner(pNode->GetProperty(i, XFA_Element::Corner, i == 0));
     if (corner || i == 0)
       strokes.SetAt(j, corner);
     else if (bNULL)
@@ -35,7 +35,8 @@ void GetStrokesInternal(CXFA_Node* pNode,
       strokes.SetAt(j, strokes[2]);
 
     j++;
-    CXFA_Edge edge = CXFA_Edge(pNode->GetProperty(i, XFA_ELEMENT_Edge, i == 0));
+    CXFA_Edge edge =
+        CXFA_Edge(pNode->GetProperty(i, XFA_Element::Edge, i == 0));
     if (edge || i == 0)
       strokes.SetAt(j, edge);
     else if (bNULL)
@@ -94,12 +95,12 @@ int32_t CXFA_Box::GetPresence() const {
 int32_t CXFA_Box::CountEdges() const {
   if (!m_pNode)
     return 0;
-  return m_pNode->CountChildren(XFA_ELEMENT_Edge);
+  return m_pNode->CountChildren(XFA_Element::Edge);
 }
 
 CXFA_Edge CXFA_Box::GetEdge(int32_t nIndex) const {
   return CXFA_Edge(
-      m_pNode ? m_pNode->GetProperty(nIndex, XFA_ELEMENT_Edge, nIndex == 0)
+      m_pNode ? m_pNode->GetProperty(nIndex, XFA_Element::Edge, nIndex == 0)
               : nullptr);
 }
 
@@ -143,12 +144,12 @@ CXFA_Fill CXFA_Box::GetFill(FX_BOOL bModified) const {
   if (!m_pNode)
     return CXFA_Fill(nullptr);
 
-  CXFA_Node* pFillNode = m_pNode->GetProperty(0, XFA_ELEMENT_Fill, bModified);
+  CXFA_Node* pFillNode = m_pNode->GetProperty(0, XFA_Element::Fill, bModified);
   return CXFA_Fill(pFillNode);
 }
 
 CXFA_Margin CXFA_Box::GetMargin() const {
-  return CXFA_Margin(m_pNode ? m_pNode->GetChild(0, XFA_ELEMENT_Margin)
+  return CXFA_Margin(m_pNode ? m_pNode->GetChild(0, XFA_Element::Margin)
                              : nullptr);
 }