Shrink SVG paint-order to take less bits

Source/core/style/SVGComputedStyle.h

Index: Source/core/style/SVGComputedStyle.h
diff --git a/Source/core/style/SVGComputedStyle.h b/Source/core/style/SVGComputedStyle.h
index d022bf08363d9f45b7455ba63089dc57d267bea8..4c19debae9d52a48153fec854062d82a0f9e9e03 100644
--- a/Source/core/style/SVGComputedStyle.h
+++ b/Source/core/style/SVGComputedStyle.h
@@ -92,7 +92,7 @@ public:
     static const AtomicString& initialMarkerMidResource() { return nullAtom; }
     static const AtomicString& initialMarkerEndResource() { return nullAtom; }
     static EMaskType initialMaskType() { return MT_LUMINANCE; }
-    static EPaintOrder initialPaintOrder() { return PO_NORMAL; }
+    static EPaintOrder initialPaintOrder() { return PaintOrderNormal; }
     static Length initialCx() { return Length(Fixed); }
     static Length initialCy() { return Length(Fixed); }
     static Length initialX() { return Length(Fixed); }
@@ -120,7 +120,7 @@ public:
     void setGlyphOrientationHorizontal(EGlyphOrientation val) { svg_inherited_flags._glyphOrientationHorizontal = val; }
     void setGlyphOrientationVertical(EGlyphOrientation val) { svg_inherited_flags._glyphOrientationVertical = val; }
     void setMaskType(EMaskType val) { svg_noninherited_flags.f.maskType = val; }
-    void setPaintOrder(EPaintOrder val) { svg_inherited_flags._paintOrder = (int)val; }
+    void setPaintOrder(EPaintOrder val) { svg_inherited_flags.paintOrder = (int)val; }
     void setCx(const Length& obj)
     {
         if (!(layout->cx == obj))
@@ -356,8 +356,8 @@ public:
     const AtomicString& markerMidResource() const { return inheritedResources->markerMid; }
     const AtomicString& markerEndResource() const { return inheritedResources->markerEnd; }
     EMaskType maskType() const { return (EMaskType) svg_noninherited_flags.f.maskType; }
-    EPaintOrder paintOrder() const { return (EPaintOrder) svg_inherited_flags._paintOrder; }
-    EPaintOrderType paintOrderType(unsigned index) const;
+    EPaintOrder paintOrder() const { return (EPaintOrder) svg_inherited_flags.paintOrder; }
+    Vector<EPaintOrderType, 3> paintTypesForPaintOrder() const;
 
     const SVGPaintType& visitedLinkFillPaintType() const { return fill->visitedLinkPaintType; }
     const Color& visitedLinkFillPaintColor() const { return fill->visitedLinkPaintColor; }
@@ -395,7 +395,7 @@ protected:
                 && (_writingMode == other._writingMode)
                 && (_glyphOrientationHorizontal == other._glyphOrientationHorizontal)
                 && (_glyphOrientationVertical == other._glyphOrientationVertical)
-                && (_paintOrder == other._paintOrder);
+                && (paintOrder == other.paintOrder);
         }
 
         bool operator!=(const InheritedFlags& other) const
@@ -415,7 +415,7 @@ protected:
         unsigned _writingMode : 3; // SVGWritingMode
         unsigned _glyphOrientationHorizontal : 3; // EGlyphOrientation
         unsigned _glyphOrientationVertical : 3; // EGlyphOrientation
-        unsigned _paintOrder : 6; // EPaintOrder
+        unsigned paintOrder : 3; // EPaintOrder
     } svg_inherited_flags;
 
     // don't inherit
@@ -473,7 +473,7 @@ private:
         svg_inherited_flags._writingMode = initialWritingMode();
         svg_inherited_flags._glyphOrientationHorizontal = initialGlyphOrientationHorizontal();
         svg_inherited_flags._glyphOrientationVertical = initialGlyphOrientationVertical();
-        svg_inherited_flags._paintOrder = initialPaintOrder();
+        svg_inherited_flags.paintOrder = initialPaintOrder();
 
         svg_noninherited_flags._niflags = 0;
         svg_noninherited_flags.f._alignmentBaseline = initialAlignmentBaseline();