Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/svg/clip-path/clip-path-on-clipped-use-expected.txt

Index: LayoutTests/svg/clip-path/clip-path-on-clipped-use-expected.txt
diff --git a/LayoutTests/svg/clip-path/clip-path-on-clipped-use-expected.txt b/LayoutTests/svg/clip-path/clip-path-on-clipped-use-expected.txt
index 9014c9fbc37483e9465a96900232d8b993609ec9..4590968dbea87afa03989a269bd5d4ba8224ddc6 100644
--- a/LayoutTests/svg/clip-path/clip-path-on-clipped-use-expected.txt
+++ b/LayoutTests/svg/clip-path/clip-path-on-clipped-use-expected.txt
@@ -9,7 +9,7 @@ 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 {use} at (10,30) size 100x60
+    LayoutSVGContainer {use} at (10,30) size 100x60
       [clipPath="clip-rect"] LayoutSVGResourceClipper {clipPath} at (10,30) size 100x60
       RenderSVGRect {rect} at (10,10) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=100.00] [height=100.00]
         [clipPath="clip-circle"] LayoutSVGResourceClipper {clipPath} at (10,10) size 100x100