Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/platform/mac/svg/W3C-SVG-1.1/masking-path-01-b-expected.txt

Index: LayoutTests/platform/mac/svg/W3C-SVG-1.1/masking-path-01-b-expected.txt
diff --git a/LayoutTests/platform/mac/svg/W3C-SVG-1.1/masking-path-01-b-expected.txt b/LayoutTests/platform/mac/svg/W3C-SVG-1.1/masking-path-01-b-expected.txt
index 69ebb203874065e149132dffede63c0d157633c5..706232e8021d94710228fee4b34c83c17cdccb71 100644
--- a/LayoutTests/platform/mac/svg/W3C-SVG-1.1/masking-path-01-b-expected.txt
+++ b/LayoutTests/platform/mac/svg/W3C-SVG-1.1/masking-path-01-b-expected.txt
@@ -2,7 +2,7 @@ layer at (0,0) size 480x360
   RenderView at (0,0) size 480x360
 layer at (0,0) size 480x360
   RenderSVGRoot {svg} at (0,0) size 480x360
-    RenderSVGContainer {g} at (20,17) size 321x269
+    LayoutSVGContainer {g} at (20,17) size 321x269
       RenderSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGResourceClipper {clipPath} [id="clip1"] [clipPathUnits=userSpaceOnUse]
           RenderSVGRect {rect} at (200,10) size 60x100 [fill={[type=SOLID] [color=#000000]}] [x=200.00] [y=10.00] [width=60.00] [height=100.00]
@@ -14,7 +14,7 @@ layer at (0,0) size 480x360
       LayoutSVGText {text} at (20,103) size 321x33 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 321x33
           chunk 1 text run 1 at (20.00,130.00) startOffset 0 endOffset 23 width 320.23: "Rectangle being clipped"
-      RenderSVGContainer {g} at (112,153) size 208x97
+      LayoutSVGContainer {g} at (112,153) size 208x97
         [clipPath="clip2"] LayoutSVGResourceClipper {clipPath} at (90,150) size 230x100
         RenderSVGRect {rect} at (112,187) size 231x46 [stroke={[type=SOLID] [color=#0000FF] [stroke width=5.00]}] [fill={[type=SOLID] [color=#00FFFF]}] [x=115.00] [y=190.00] [width=225.00] [height=40.00]
         RenderSVGRect {rect} at (112,237) size 231x46 [stroke={[type=SOLID] [color=#008000] [stroke width=5.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=115.00] [y=240.00] [width=225.00] [height=40.00]
@@ -24,7 +24,7 @@ layer at (0,0) size 480x360
       LayoutSVGText {text} at (20,253) size 269x33 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 269x33
           chunk 1 text run 1 at (20.00,280.00) startOffset 0 endOffset 19 width 268.52: "Group being clipped"
-      RenderSVGContainer {g} at (89,149) size 232x102
+      LayoutSVGContainer {g} at (89,149) size 232x102
         RenderSVGRect {rect} at (89,149) size 177x102 [stroke={[type=SOLID] [color=#999999] [stroke width=2.00]}] [x=90.00] [y=150.00] [width=175.00] [height=100.00]
         RenderSVGRect {rect} at (224,159) size 97x77 [stroke={[type=SOLID] [color=#999999] [stroke width=2.00]}] [x=225.00] [y=160.00] [width=95.00] [height=75.00]
     LayoutSVGText {text} at (10,304) size 284x46 contains 1 chunk(s)