Move RenderSVGRect to layout/svg

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

Index: LayoutTests/svg/custom/marker-referencePoint-expected.txt
diff --git a/LayoutTests/svg/custom/marker-referencePoint-expected.txt b/LayoutTests/svg/custom/marker-referencePoint-expected.txt
index a7cc0a88964f4058126431b05860bf2e059dfe7f..6f59a8051b10ab1233ed879251c31d8529c04599 100644
--- a/LayoutTests/svg/custom/marker-referencePoint-expected.txt
+++ b/LayoutTests/svg/custom/marker-referencePoint-expected.txt
@@ -5,5 +5,5 @@ layer at (0,0) size 384x192
     RenderSVGHiddenContainer {defs} at (0,0) size 0x0
       LayoutSVGResourceMarker {marker} [id="Triangle"] [markerUnits=strokeWidth] [ref at (0,5)] [angle=auto]
         RenderSVGPath {path} at (0,0) size 1x1 [fill={[type=SOLID] [color=#000000]}] [data="M 0 0 L 10 5 L 0 10 Z"]
-    RenderSVGRect {rect} at (0,0) size 384x192 [stroke={[type=SOLID] [color=#0000FF] [stroke width=10.00]}] [x=10.00] [y=10.00] [width=3980.00] [height=1980.00]
+    LayoutSVGRect {rect} at (0,0) size 384x192 [stroke={[type=SOLID] [color=#0000FF] [stroke width=10.00]}] [x=10.00] [y=10.00] [width=3980.00] [height=1980.00]
     RenderSVGPath {path} at (96,67) size 175x84 [stroke={[type=SOLID] [color=#000000] [stroke width=100.00]}] [end marker=Triangle] [data="M 1000 750 L 2000 750 L 2500 1250"]