Move RenderSVGRect to layout/svg

LayoutTests/svg/custom/marker-empty-path-expected.txt

Index: LayoutTests/svg/custom/marker-empty-path-expected.txt
diff --git a/LayoutTests/svg/custom/marker-empty-path-expected.txt b/LayoutTests/svg/custom/marker-empty-path-expected.txt
index f864bb1ec60ca016997d783228fb0c21d4e80b30..0bdb2c8e979f2f14859cd2fa2c3fedcca24d25b4 100644
--- a/LayoutTests/svg/custom/marker-empty-path-expected.txt
+++ b/LayoutTests/svg/custom/marker-empty-path-expected.txt
@@ -5,6 +5,6 @@ layer at (0,0) size 800x600
     LayoutSVGContainer {g} at (0,0) size 72x172
       RenderSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGResourceMarker {marker} [id="testMarker"] [markerUnits=strokeWidth] [ref at (0,0)] [angle=0.00]
-          RenderSVGRect {rect} at (0,0) size 3x3 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=96.00] [height=96.00]
+          LayoutSVGRect {rect} at (0,0) size 3x3 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=96.00] [height=96.00]
       RenderSVGPath {path} at (0,0) size 72x72 [fill={[type=SOLID] [color=#000000]}] [end marker=testMarker] [data="M 0 0 L 0 0"]
       RenderSVGPath {line} at (0,100) size 72x72 [fill={[type=SOLID] [color=#000000]}] [end marker=testMarker] [x1=0.00] [y1=100.00] [x2=0.00] [y2=100.00]