Shrink SVG paint-order to take less bits

Source/core/style/SVGComputedStyleDefs.h

Index: Source/core/style/SVGComputedStyleDefs.h
diff --git a/Source/core/style/SVGComputedStyleDefs.h b/Source/core/style/SVGComputedStyleDefs.h
index 8d5540f097073feb7a8b31d5079e514b377f7866..7176a3e0d0af5ac1f8efbff7d921d56ba8b4f3a2 100644
--- a/Source/core/style/SVGComputedStyleDefs.h
+++ b/Source/core/style/SVGComputedStyleDefs.h
@@ -114,9 +114,15 @@ enum EPaintOrderType {
     PT_MARKERS = 3
 };
 
-const int kPaintOrderBitwidth = 2;
-typedef unsigned EPaintOrder;
-const unsigned PO_NORMAL = PT_FILL | PT_STROKE << 2 | PT_MARKERS << 4;
+enum EPaintOrder {
+    PaintOrderNormal = 0,
+    PaintOrderFillStrokeMarkers = 1,
+    PaintOrderFillMarkersStroke = 2,
+    PaintOrderStrokeFillMarkers = 3,
+    PaintOrderStrokeMarkersFill = 4,
+    PaintOrderMarkersFillStroke = 5,
+    PaintOrderMarkersStrokeFill = 6
+};
 
 // Inherited/Non-Inherited Style Datastructures
 class StyleFillData : public RefCounted<StyleFillData> {