Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/svg/clip-path/clip-in-clip-expected.txt

Index: LayoutTests/svg/clip-path/clip-in-clip-expected.txt
diff --git a/LayoutTests/svg/clip-path/clip-in-clip-expected.txt b/LayoutTests/svg/clip-path/clip-in-clip-expected.txt
index af1e12697ea64826d6f0621d53a59261d8c8a603..45eba293bde09a42c5ff98fa99271b84562860a4 100644
--- a/LayoutTests/svg/clip-path/clip-in-clip-expected.txt
+++ b/LayoutTests/svg/clip-path/clip-in-clip-expected.txt
@@ -7,7 +7,7 @@ layer at (0,0) size 800x600
         RenderSVGRect {rect} at (10,19) size 20x11 [fill={[type=SOLID] [color=#000000]}] [x=10.00] [y=19.00] [width=20.00] [height=11.00]
       LayoutSVGResourceClipper {clipPath} [id="nested-clipper"] [clipPathUnits=userSpaceOnUse]
         RenderSVGRect {rect} at (10,10) size 20x11 [fill={[type=SOLID] [color=#000000]}] [x=10.00] [y=10.00] [width=20.00] [height=11.00]
-    RenderSVGContainer {g} at (10,19) size 20x11
+    LayoutSVGContainer {g} at (10,19) size 20x11
       [clipPath="clipper"] LayoutSVGResourceClipper {clipPath} at (10,19) size 20x11
       RenderSVGRect {rect} at (8,8) size 24x24 [fill={[type=SOLID] [color=#FF0000]}] [x=8.00] [y=8.00] [width=24.00] [height=24.00]
       RenderSVGRect {rect} at (10,19) size 20x2 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=19.00] [width=20.00] [height=2.00]