Move the remaining rendering/svg/RenderSVG* files to layout.

LayoutTests/platform/mac/svg/custom/gradient-cycle-detection-expected.txt

Index: LayoutTests/platform/mac/svg/custom/gradient-cycle-detection-expected.txt
diff --git a/LayoutTests/platform/mac/svg/custom/gradient-cycle-detection-expected.txt b/LayoutTests/platform/mac/svg/custom/gradient-cycle-detection-expected.txt
index fa0fd89f744564c8cc70ae7e67f02819109a0fd8..8ee03a7347cb065f37c0af1b1c441457a4158bbd 100644
--- a/LayoutTests/platform/mac/svg/custom/gradient-cycle-detection-expected.txt
+++ b/LayoutTests/platform/mac/svg/custom/gradient-cycle-detection-expected.txt
@@ -1,11 +1,11 @@
 layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  RenderSVGRoot {svg} at (0,0) size 565x154
+  LayoutSVGRoot {svg} at (0,0) size 565x154
     LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
       LayoutSVGResourceLinearGradient {linearGradient} [id="cycle2"] [gradientUnits=objectBoundingBox] [start=(0,0)] [end=(1,0)]
-        RenderSVGGradientStop {stop} [offset=0.00] [color=#FF0000]
-        RenderSVGGradientStop {stop} [offset=1.00] [color=#FFA500]
+        LayoutSVGGradientStop {stop} [offset=0.00] [color=#FF0000]
+        LayoutSVGGradientStop {stop} [offset=1.00] [color=#FFA500]
       LayoutSVGResourceLinearGradient {linearGradient} [id="cycle1"] [gradientUnits=objectBoundingBox] [start=(0,0)] [end=(1,0)]
     LayoutSVGRect {rect} at (0,0) size 100x100 [fill={[type=LINEAR-GRADIENT] [id="cycle1"]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
     LayoutSVGText {text} at (10,136) size 555x18 contains 1 chunk(s)