[svg2] Make 'x' and 'y' presentation attributes

Source/core/rendering/style/SVGRenderStyleDefs.h

Index: Source/core/rendering/style/SVGRenderStyleDefs.h
diff --git a/Source/core/rendering/style/SVGRenderStyleDefs.h b/Source/core/rendering/style/SVGRenderStyleDefs.h
index 2c0ee620c100a71ba5175805621f01ceb22fe577..dec202259d6a5c9393378c1b4e9e3b382f92bd39 100644
--- a/Source/core/rendering/style/SVGRenderStyleDefs.h
+++ b/Source/core/rendering/style/SVGRenderStyleDefs.h
@@ -30,6 +30,7 @@
 
 #include "core/svg/SVGLength.h"
 #include "core/svg/SVGLengthList.h"
+#include "platform/Length.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCounted.h"
@@ -259,6 +260,23 @@ namespace blink {
         StyleInheritedResourceData(const StyleInheritedResourceData&);
     };
 
+    // Positioning and sizing properties.
+    class StyleLayoutData : public RefCounted<StyleLayoutData> {
+    public:
+        static PassRefPtr<StyleLayoutData> create() { return adoptRef(new StyleLayoutData); }
+        PassRefPtr<StyleLayoutData> copy() const;
+        bool operator==(const StyleLayoutData&) const;
+        bool operator!=(const StyleLayoutData& other) const
+        {
+            return !(*this == other);
+        }
+        Length x;
+        Length y;
+    private:
+        StyleLayoutData();
+        StyleLayoutData(const StyleLayoutData&);
+    };
+
 } // namespace blink
 
 #endif // SVGRenderStyleDefs_h