Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/platform/win/svg/custom/use-on-text-expected.txt

Index: LayoutTests/platform/win/svg/custom/use-on-text-expected.txt
diff --git a/LayoutTests/platform/win/svg/custom/use-on-text-expected.txt b/LayoutTests/platform/win/svg/custom/use-on-text-expected.txt
index 21405def00b7e8c88aabf4270ae5b8f9506087b1..7a742c3e09711cb909bd0e32acc5e60a3655ee3f 100644
--- a/LayoutTests/platform/win/svg/custom/use-on-text-expected.txt
+++ b/LayoutTests/platform/win/svg/custom/use-on-text-expected.txt
@@ -6,14 +6,14 @@ layer at (0,0) size 800x600
       LayoutSVGText {text} at (0,-26) size 69x45 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 69x44
           chunk 1 text run 1 at (0.00,10.00) startOffset 0 endOffset 4 width 68.87: "Test"
-    RenderSVGContainer {g} at (246,0) size 146x91 [transform={m=((1.00,0.00)(0.00,1.00)) t=(125.00,25.00)}]
+    LayoutSVGContainer {g} at (246,0) size 146x91 [transform={m=((1.00,0.00)(0.00,1.00)) t=(125.00,25.00)}]
       LayoutSVGText {text} at (0,-26) size 69x45 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 69x44
           chunk 1 text run 1 at (0.00,10.00) startOffset 0 endOffset 4 width 68.87: "Test"
     LayoutSVGText {text} at (10,45) size 245x19 contains 1 chunk(s)
       LayoutSVGInlineText {#text} at (0,0) size 245x18
         chunk 1 text run 1 at (10.00,60.00) startOffset 0 endOffset 38 width 244.40: "The two objects should look identical."
-    RenderSVGContainer {use} at (46,0) size 146x91 [transform={m=((1.00,0.00)(0.00,1.00)) t=(25.00,25.00)}]
+    LayoutSVGContainer {use} at (46,0) size 146x91 [transform={m=((1.00,0.00)(0.00,1.00)) t=(25.00,25.00)}]
       LayoutSVGText {text} at (0,-26) size 69x45 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 69x44
           chunk 1 text run 1 at (0.00,10.00) startOffset 0 endOffset 4 width 68.87: "Test"