Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/platform/linux/svg/text/text-text-03-b-expected.txt

Index: LayoutTests/platform/linux/svg/text/text-text-03-b-expected.txt
diff --git a/LayoutTests/platform/linux/svg/text/text-text-03-b-expected.txt b/LayoutTests/platform/linux/svg/text/text-text-03-b-expected.txt
index e97d30e368c028869e055108a416af7183f7d88d..fc3c9a89c48447708e7d38191bae43b51f977191 100644
--- a/LayoutTests/platform/linux/svg/text/text-text-03-b-expected.txt
+++ b/LayoutTests/platform/linux/svg/text/text-text-03-b-expected.txt
@@ -2,7 +2,7 @@ layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 800x600
   RenderSVGRoot {svg} at (0,0) size 800x600
-    RenderSVGContainer {g} at (1,45) size 779x440
+    LayoutSVGContainer {g} at (1,45) size 779x440
       LayoutSVGText {text} at (19,28) size 77x40 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 77x39
           chunk 1 text run 1 at (19.00,61.00) startOffset 0 endOffset 5 width 76.80: "Plain"
@@ -21,9 +21,9 @@ layer at (0,0) size 800x600
       LayoutSVGText {text} at (1,167) size 467x40 contains 1 chunk(s)
         LayoutSVGInlineText {#text} at (0,0) size 467x39
           chunk 1 text run 1 at (1.00,200.00) startOffset 0 endOffset 27 width 466.80: "Bold, italic and underlined"
-      RenderSVGContainer {g} at (81,372) size 638x113
+      LayoutSVGContainer {g} at (81,372) size 638x113
         RenderSVGRect {rect} at (81,373) size 638x111 [stroke={[type=SOLID] [color=#000000] [stroke width=2.00]}] [x=50.00] [y=225.00] [width=380.00] [height=64.00]
-        RenderSVGContainer {g} at (91,372) size 572x113
+        LayoutSVGContainer {g} at (91,372) size 572x113
           LayoutSVGText {text} at (55,223) size 338x28 contains 1 chunk(s)
             LayoutSVGInlineText {#text} at (0,0) size 338x27
               chunk 1 text run 1 at (55.00,245.00) startOffset 0 endOffset 34 width 337.20: "Each line of text which flows in a"