Move RenderSVGContainer to layout/svg/LayoutSVGContainer.

LayoutTests/platform/linux/svg/custom/feComponentTransfer-Linear-expected.txt

Index: LayoutTests/platform/linux/svg/custom/feComponentTransfer-Linear-expected.txt
diff --git a/LayoutTests/platform/linux/svg/custom/feComponentTransfer-Linear-expected.txt b/LayoutTests/platform/linux/svg/custom/feComponentTransfer-Linear-expected.txt
index 5964a3113ba9ce24defe51fb541f4202207ab096..080ac820c9099ebd1c824f01247ef905d57e60e5 100644
--- a/LayoutTests/platform/linux/svg/custom/feComponentTransfer-Linear-expected.txt
+++ b/LayoutTests/platform/linux/svg/custom/feComponentTransfer-Linear-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 (25,16) size 750x485
-    RenderSVGContainer {g} at (25,16) size 750x485
+    LayoutSVGContainer {g} at (25,16) size 750x485
       RenderSVGViewportContainer {svg} at (25,16) size 750x485
         RenderSVGHiddenContainer {defs} at (0,0) size 0x0
           LayoutSVGResourceLinearGradient {linearGradient} [id="MyGradient"] [gradientUnits=userSpaceOnUse] [start=(10,0)] [end=(590,0)]
@@ -37,7 +37,7 @@ layer at (0,0) size 800x600
                 {alpha: type="UNKNOWN" slope="0.00" intercept="0.00" amplitude="0.00" exponent="0.00" offset="0.00"}]
               [SourceGraphic]
         RenderSVGRect {rect} at (25,16) size 750x485 [stroke={[type=SOLID] [color=#0000FF]}] [x=1.00] [y=1.00] [width=648.00] [height=418.00]
-        RenderSVGContainer {g} at (25,16) size 750x485
+        LayoutSVGContainer {g} at (25,16) size 750x485
           RenderSVGRect {rect} at (25,16) size 750x485 [stroke={[type=SOLID] [color=#0000FF]}] [x=1.00] [y=1.00] [width=648.00] [height=418.00]
           RenderSVGRect {rect} at (48,27) size 670x47 [fill={[type=LINEAR-GRADIENT] [id="MyGradient"]}] [x=20.00] [y=10.00] [width=580.00] [height=40.00]
             [filter="Identity"] LayoutSVGResourceFilter {filter} at (20,10) size 580x40