Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/platform/mac/svg/custom/use-events-crash-expected.txt

Index: LayoutTests/platform/mac/svg/custom/use-events-crash-expected.txt
diff --git a/LayoutTests/platform/mac/svg/custom/use-events-crash-expected.txt b/LayoutTests/platform/mac/svg/custom/use-events-crash-expected.txt
index a250f4d1df18e92af232427e6cd68b1a0116c6e3..8d0301ff549c3594141b626fd28845f463d96095 100644
--- a/LayoutTests/platform/mac/svg/custom/use-events-crash-expected.txt
+++ b/LayoutTests/platform/mac/svg/custom/use-events-crash-expected.txt
@@ -2,19 +2,19 @@ layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 480x360
   RenderSVGRoot {svg} at (97,25) size 293x40
-    RenderSVGContainer {g} at (97,25) size 293x40
+    LayoutSVGContainer {g} at (97,25) size 293x40
       RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-        RenderSVGContainer {g} at (0,0) size 42x42
+        LayoutSVGContainer {g} at (0,0) size 42x42
           RenderSVGRect {rect} at (0,0) size 42x42 [stroke={[type=SOLID] [color=#FFFF00] [stroke width=3.00]}] [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=40.00] [height=40.00]
-      RenderSVGContainer {g} at (97,29) size 233x28
-        RenderSVGContainer {g} at (97,29) size 233x14 [transform={m=((1.00,0.00)(0.00,1.00)) t=(330.00,40.00)}]
+      LayoutSVGContainer {g} at (97,29) size 233x28
+        LayoutSVGContainer {g} at (97,29) size 233x14 [transform={m=((1.00,0.00)(0.00,1.00)) t=(330.00,40.00)}]
           LayoutSVGText {text} at (-233,-11) size 233x14 contains 1 chunk(s)
             LayoutSVGInlineText {#text} at (0,0) size 233x14
               chunk 1 (end anchor) text run 1 at (-232.29,0.00) startOffset 0 endOffset 47 width 232.29: "Right-clicking on green box using a debug build"
-        RenderSVGContainer {g} at (97,43) size 233x14 [transform={m=((1.00,0.00)(0.00,1.00)) t=(330.00,54.00)}]
+        LayoutSVGContainer {g} at (97,43) size 233x14 [transform={m=((1.00,0.00)(0.00,1.00)) t=(330.00,54.00)}]
           LayoutSVGText {text} at (-233,-11) size 233x14 contains 1 chunk(s)
             LayoutSVGInlineText {#text} at (0,0) size 233x14
               chunk 1 (end anchor) text run 1 at (-232.29,0.00) startOffset 0 endOffset 47 width 232.29: "should not cause an assert (Bugzilla Bug 12580)"
-      RenderSVGContainer {g} at (350,25) size 40x40 [transform={m=((1.00,0.00)(0.00,1.00)) t=(350.00,25.00)}]
-        RenderSVGContainer {use} at (350,25) size 40x40
+      LayoutSVGContainer {g} at (350,25) size 40x40 [transform={m=((1.00,0.00)(0.00,1.00)) t=(350.00,25.00)}]
+        LayoutSVGContainer {use} at (350,25) size 40x40
           RenderSVGRect {rect} at (350,25) size 40x40 [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=40.00] [height=40.00]