Move RenderSVGRect to layout/svg

LayoutTests/svg/custom/marker-changes-expected.txt

Index: LayoutTests/svg/custom/marker-changes-expected.txt
diff --git a/LayoutTests/svg/custom/marker-changes-expected.txt b/LayoutTests/svg/custom/marker-changes-expected.txt
index ab99afd1393a373aa9e42129b178b688e30dd2be..92f06cb458070c820f7fe57dae6a1e29f226da3c 100644
--- a/LayoutTests/svg/custom/marker-changes-expected.txt
+++ b/LayoutTests/svg/custom/marker-changes-expected.txt
@@ -4,7 +4,7 @@ layer at (0,0) size 800x600
   RenderSVGRoot {svg} at (122,127) size 66x66
     RenderSVGHiddenContainer {defs} at (0,0) size 0x0
       LayoutSVGResourceMarker {marker} [id="markerStart"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
-        RenderSVGRect {rect} at (0,0) size 2x2 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
+        LayoutSVGRect {rect} at (0,0) size 2x2 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
       LayoutSVGResourceMarker {marker} [id="markerMiddle"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
         RenderSVGEllipse {circle} at (0,0) size 2x2 [fill={[type=SOLID] [color=#008000]}] [cx=5.00] [cy=5.00] [r=5.00]
       LayoutSVGResourceMarker {marker} [id="markerEnd"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]