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

LayoutTests/svg/custom/gradient-rotated-bbox-expected.txt

Index: LayoutTests/svg/custom/gradient-rotated-bbox-expected.txt
diff --git a/LayoutTests/svg/custom/gradient-rotated-bbox-expected.txt b/LayoutTests/svg/custom/gradient-rotated-bbox-expected.txt
index 0466760cc8ec03091fd73352563b7189825964f0..ff7d14dc518ffe9c8c0df02689557db384b2f01f 100644
--- a/LayoutTests/svg/custom/gradient-rotated-bbox-expected.txt
+++ b/LayoutTests/svg/custom/gradient-rotated-bbox-expected.txt
@@ -1,14 +1,14 @@
 layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  RenderSVGRoot {svg} at (3,151) size 546x298
+  LayoutSVGRoot {svg} at (3,151) size 546x298
     LayoutSVGResourceLinearGradient {linearGradient} [id="my_gradient"] [gradientUnits=objectBoundingBox] [start=(0,0)] [end=(0,1)]
-      RenderSVGGradientStop {stop} [offset=0.00] [color=#FF0000]
-      RenderSVGGradientStop {stop} [offset=0.50] [color=#008000]
-      RenderSVGGradientStop {stop} [offset=1.00] [color=#0000FF]
+      LayoutSVGGradientStop {stop} [offset=0.00] [color=#FF0000]
+      LayoutSVGGradientStop {stop} [offset=0.50] [color=#008000]
+      LayoutSVGGradientStop {stop} [offset=1.00] [color=#0000FF]
     LayoutSVGRect {rect} at (251,151) size 298x298 [transform={m=((0.21,0.21)(-0.21,0.21)) t=(189.39,75.75)}] [fill={[type=LINEAR-GRADIENT] [id="my_gradient"]}] [x=0.00] [y=0.00] [width=400.00] [height=300.00]
     LayoutSVGResourceRadialGradient {radialGradient} [id="my_gradient2"] [gradientUnits=objectBoundingBox] [center=(0.50,0.50)] [focal=(0.50,0.50)] [radius=1.00] [focalRadius=0.00]
-      RenderSVGGradientStop {stop} [offset=0.00] [color=#FF0000]
-      RenderSVGGradientStop {stop} [offset=0.50] [color=#008000]
-      RenderSVGGradientStop {stop} [offset=1.00] [color=#0000FF]
+      LayoutSVGGradientStop {stop} [offset=0.00] [color=#FF0000]
+      LayoutSVGGradientStop {stop} [offset=0.50] [color=#008000]
+      LayoutSVGGradientStop {stop} [offset=1.00] [color=#0000FF]
     LayoutSVGRect {rect} at (3,210) size 290x180 [transform={m=((0.30,0.00)(0.08,0.30)) t=(1.94,105.00)}] [fill={[type=RADIAL-GRADIENT] [id="my_gradient2"]}] [x=0.00] [y=0.00] [width=400.00] [height=300.00]