Move the SVG container code from rendering/svg to layout/svg.

LayoutTests/platform/linux/svg/W3C-SVG-1.1/animate-elem-30-t-expected.txt

Index: LayoutTests/platform/linux/svg/W3C-SVG-1.1/animate-elem-30-t-expected.txt
diff --git a/LayoutTests/platform/linux/svg/W3C-SVG-1.1/animate-elem-30-t-expected.txt b/LayoutTests/platform/linux/svg/W3C-SVG-1.1/animate-elem-30-t-expected.txt
index 11f6ee3110253f4c48932a3960bb139e6ac64ef9..e7a7b1fa81fb77411c77bdfbf4ef4d9b56d94b9a 100644
--- a/LayoutTests/platform/linux/svg/W3C-SVG-1.1/animate-elem-30-t-expected.txt
+++ b/LayoutTests/platform/linux/svg/W3C-SVG-1.1/animate-elem-30-t-expected.txt
@@ -27,17 +27,17 @@ layer at (0,0) size 480x360
       LayoutSVGRect {rect} at (319,220) size 52x40 [fill={[type=SOLID] [color=#B4B4B4]}] [x=230.00] [y=170.00] [width=40.00] [height=30.00]
       LayoutSVGPath {line} at (344,13) size 2x208 [stroke={[type=SOLID] [color=#B4B4B4]}] [fill={[type=SOLID] [color=#000000]}] [x1=250.00] [y1=10.00] [x2=250.00] [y2=170.00]
       LayoutSVGPath {path} at (341,208) size 8x13 [fill={[type=SOLID] [color=#B4B4B4]}] [data="M 250 170 L 247 160 L 253 160 Z"]
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGPath {line} at (31,12) size 30x54 [stroke={[type=SOLID] [color=#105D8C] [stroke width=3.00]}] [fill={[type=SOLID] [color=#000000]}] [x1=30.00] [y1=50.00] [x2=10.00] [y2=10.00]
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGRect {rect} at (31,76) size 82x30 [stroke={[type=SOLID] [color=#000000] [stroke width=2.00]}] [fill={[type=SOLID] [color=#FFFFFF]}] [x=10.00] [y=60.00] [width=60.00] [height=20.00]
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGEllipse {circle} at (32,116) size 28x28 [stroke={[type=SOLID] [color=#000000]}] [fill={[type=SOLID] [color=#105D8C]}] [cx=20.00] [cy=100.00] [r=10.00]
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGPath {polyline} at (278,26) size 30x52 [stroke={[type=SOLID] [color=#105D8C] [stroke width=2.00]}] [points="200 20 200 40 220 40 220 60"]
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGPath {polygon} at (330,24) size 30x30 [stroke={[type=SOLID] [color=#000000] [stroke width=2.00]}] [fill={[type=SOLID] [color=#FFFFFF]}] [points="240 20 240 40 260 40 260 20"]
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGImage {image} at (319,6) size 52x105
       LayoutSVGContainer {use} at (44,12) size 30x54 [transform={m=((1.00,0.00)(0.00,1.00)) t=(10.00,0.00)}]
         LayoutSVGPath {line} at (44,12) size 30x54 [stroke={[type=SOLID] [color=#105D8C] [stroke width=3.00]}] [fill={[type=SOLID] [color=#000000]}] [x1=30.00] [y1=50.00] [x2=10.00] [y2=10.00]