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

Source/core/rendering/svg/RenderSVGRect.cpp

Index: Source/core/rendering/svg/RenderSVGRect.cpp
diff --git a/Source/core/rendering/svg/RenderSVGRect.cpp b/Source/core/rendering/svg/RenderSVGRect.cpp
index e50f50ce7d0fda9d7534a13b88f32932aa233be5..45496d47953cafba3d3b7f8dd012dd2731795f61 100644
--- a/Source/core/rendering/svg/RenderSVGRect.cpp
+++ b/Source/core/rendering/svg/RenderSVGRect.cpp
@@ -74,7 +74,11 @@ void RenderSVGRect::updateShapeFromElement()
         }
     }
 
-    m_fillBoundingBox = FloatRect(FloatPoint(rect->x()->currentValue()->value(lengthContext), rect->y()->currentValue()->value(lengthContext)), boundingBoxSize);
+    m_fillBoundingBox = FloatRect(
+        FloatPoint(
+            lengthContext.valueForLength(style()->svgStyle().x(), LengthModeWidth),
+            lengthContext.valueForLength(style()->svgStyle().y(), LengthModeHeight)),
+        boundingBoxSize);
 
     // To decide if the stroke contains a point we create two rects which represent the inner and
     // the outer stroke borders. A stroke contains the point, if the point is between them.