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

LayoutTests/platform/win/svg/custom/svg-overflow-types-expected.txt

Index: LayoutTests/platform/win/svg/custom/svg-overflow-types-expected.txt
diff --git a/LayoutTests/platform/win/svg/custom/svg-overflow-types-expected.txt b/LayoutTests/platform/win/svg/custom/svg-overflow-types-expected.txt
index 5e8889e634f15c58cf885833f7f044486145f86e..8abaec81df1bcd8115cbcca9949b9129d032e88c 100644
--- a/LayoutTests/platform/win/svg/custom/svg-overflow-types-expected.txt
+++ b/LayoutTests/platform/win/svg/custom/svg-overflow-types-expected.txt
@@ -3,27 +3,27 @@ layer at (0,0) size 800x600
 layer at (0,0) size 400x400
   RenderSVGRoot {svg} at (0,0) size 400x400
     LayoutSVGRect {rect} at (0,0) size 200x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=200.00] [height=200.00]
-    RenderSVGViewportContainer {svg} at (0,0) size 200x200
+    LayoutSVGViewportContainer {svg} at (0,0) size 200x200
       LayoutSVGRect {rect} at (0,0) size 200x200 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=200.00] [height=200.00]
       LayoutSVGRect {rect} at (0,0) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
     LayoutSVGText {text} at (50,86) size 110x17 contains 1 chunk(s)
       LayoutSVGInlineText {#text} at (0,0) size 110x17
         chunk 1 text run 1 at (50.00,100.00) startOffset 0 endOffset 16 width 109.75: "overflow: hidden"
     LayoutSVGRect {rect} at (200,0) size 200x200 [fill={[type=SOLID] [color=#008000]}] [x=200.00] [y=0.00] [width=200.00] [height=200.00]
-    RenderSVGViewportContainer {svg} at (200,0) size 200x200
+    LayoutSVGViewportContainer {svg} at (200,0) size 200x200
       LayoutSVGRect {rect} at (200,0) size 200x200 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=200.00] [height=200.00]
       LayoutSVGRect {rect} at (200,0) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
     LayoutSVGText {text} at (250,86) size 102x17 contains 1 chunk(s)
       LayoutSVGInlineText {#text} at (0,0) size 102x17
         chunk 1 text run 1 at (250.00,100.00) startOffset 0 endOffset 16 width 101.75: "overflow: scroll"
     LayoutSVGRect {rect} at (0,200) size 200x200 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=200.00] [width=200.00] [height=200.00]
-    RenderSVGViewportContainer {svg} at (0,200) size 200x200
+    LayoutSVGViewportContainer {svg} at (0,200) size 200x200
       LayoutSVGRect {rect} at (0,200) size 200x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=200.00] [height=200.00]
     LayoutSVGText {text} at (50,286) size 94x17 contains 1 chunk(s)
       LayoutSVGInlineText {#text} at (0,0) size 94x17
         chunk 1 text run 1 at (50.00,300.00) startOffset 0 endOffset 14 width 93.75: "overflow: auto"
     LayoutSVGRect {rect} at (200,200) size 200x200 [fill={[type=SOLID] [color=#FF0000]}] [x=200.00] [y=200.00] [width=200.00] [height=200.00]
-    RenderSVGViewportContainer {svg} at (200,200) size 200x200
+    LayoutSVGViewportContainer {svg} at (200,200) size 200x200
       LayoutSVGRect {rect} at (200,200) size 200x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=200.00] [height=200.00]
     LayoutSVGText {text} at (250,286) size 109x17 contains 1 chunk(s)
       LayoutSVGInlineText {#text} at (0,0) size 109x17