Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/svg/clip-path/clip-path-on-g-and-child-expected.txt

Index: LayoutTests/svg/clip-path/clip-path-on-g-and-child-expected.txt
diff --git a/LayoutTests/svg/clip-path/clip-path-on-g-and-child-expected.txt b/LayoutTests/svg/clip-path/clip-path-on-g-and-child-expected.txt
index 32de8d85216af6eaf1208065c9352b688361c0c8..4e7f03facf2fe1145f3e55328e4a2eb57b714b6c 100644
--- a/LayoutTests/svg/clip-path/clip-path-on-g-and-child-expected.txt
+++ b/LayoutTests/svg/clip-path/clip-path-on-g-and-child-expected.txt
@@ -7,7 +7,7 @@ layer at (0,0) size 800x600
         RenderSVGEllipse {circle} at (10,10) size 100x100 [fill={[type=SOLID] [color=#000000]}] [cx=60.00] [cy=60.00] [r=50.00]
       LayoutSVGResourceClipper {clipPath} [id="clip-rect"] [clipPathUnits=userSpaceOnUse]
         RenderSVGRect {rect} at (10,30) size 100x60 [fill={[type=SOLID] [color=#000000]}] [x=10.00] [y=30.00] [width=100.00] [height=60.00]
-    RenderSVGContainer {g} at (10,30) size 100x60
+    LayoutSVGContainer {g} at (10,30) size 100x60
       [clipPath="clip-circle"] LayoutSVGResourceClipper {clipPath} at (10,10) size 100x100
       RenderSVGRect {rect} at (10,30) size 100x60 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=100.00] [height=100.00]
         [clipPath="clip-rect"] LayoutSVGResourceClipper {clipPath} at (10,30) size 100x60