Move the SVG container code from rendering/svg to layout/svg.

LayoutTests/platform/android/svg/text/text-text-04-t-expected.txt

Index: LayoutTests/platform/android/svg/text/text-text-04-t-expected.txt
diff --git a/LayoutTests/platform/android/svg/text/text-text-04-t-expected.txt b/LayoutTests/platform/android/svg/text/text-text-04-t-expected.txt
index dba5c1f037df98a7f3b90a646911f78ea98db90c..1a2d4f26b17a52f6e9e8d274088aa93bdb03fa2f 100644
--- a/LayoutTests/platform/android/svg/text/text-text-04-t-expected.txt
+++ b/LayoutTests/platform/android/svg/text/text-text-04-t-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
-    RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+    LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
     LayoutSVGContainer {g} at (57,33) size 700x484
       LayoutSVGContainer {g} at (57,33) size 260x42 [transform={m=((1.00,0.00)(0.00,1.00)) t=(130.00,40.00)}]
         LayoutSVGText {text} at (-96,-15) size 66x20 contains 1 chunk(s)
@@ -20,7 +20,7 @@ layer at (0,0) size 800x600
           LayoutSVGText {text} at (0,-20) size 60x25 contains 1 chunk(s)
             LayoutSVGInlineText {#text} at (0,0) size 60x25
               chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 4 width 59.99: "1234"
-      RenderSVGHiddenContainer {defs} at (0,0) size 0x0
+      LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGRect {rect} at (0,0) size 7x7 [fill={[type=SOLID] [color=#000000]}] [x=-4.00] [y=-4.00] [width=8.00] [height=8.00]
       LayoutSVGContainer {g} at (118,100) size 257x42 [transform={m=((1.00,0.00)(0.00,1.00)) t=(130.00,80.00)}]
         LayoutSVGText {text} at (-59,-15) size 29x20 contains 1 chunk(s)