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

Source/core/layout/style/SVGLayoutStyleDefs.h

 /*
     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005 Rob Buis <buis@kde.org>
     Copyright (C) Research In Motion Limited 2010. All rights reserved.
 
     Based on khtml code by:
     Copyright (C) 2000-2003 Lars Knoll (knoll@kde.org)
               (C) 2000 Antti Koivisto (koivisto@kde.org)
               (C) 2000-2003 Dirk Mueller (mueller@kde.org)
               (C) 2002-2003 Apple Computer, Inc.
@@ skipping 12 matching lines @@
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef SVGLayoutStyleDefs_h
 #define SVGLayoutStyleDefs_h
 
 #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"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 enum SVGPaintType {
     SVG_PAINTTYPE_RGBCOLOR,
     SVG_PAINTTYPE_NONE,
@@ skipping 209 matching lines @@
 
     AtomicString markerStart;
     AtomicString markerMid;
     AtomicString markerEnd;
 
 private:
     StyleInheritedResourceData();
     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 // SVGLayoutStyleDefs_h