Move rendering/svg/RenderSVGResource* to layout/svg.

LayoutTests/svg/custom/mask-changes-expected.txt

Index: LayoutTests/svg/custom/mask-changes-expected.txt
diff --git a/LayoutTests/svg/custom/mask-changes-expected.txt b/LayoutTests/svg/custom/mask-changes-expected.txt
index 8132e84834f4a6a60f34772b25c6a79e9217d225..705fe63faac01574cfeeb9b83271ab654ef47f24 100644
--- a/LayoutTests/svg/custom/mask-changes-expected.txt
+++ b/LayoutTests/svg/custom/mask-changes-expected.txt
@@ -2,8 +2,8 @@ layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 800x600
   RenderSVGRoot {svg} at (0,100) size 800x100
-    RenderSVGResourceMasker {mask} [id="Mask"] [maskUnits=userSpaceOnUse] [maskContentUnits=userSpaceOnUse]
+    LayoutSVGResourceMasker {mask} [id="Mask"] [maskUnits=userSpaceOnUse] [maskContentUnits=userSpaceOnUse]
       RenderSVGRect {rect} at (0,0) size 800x300 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=800.00] [height=300.00]
     RenderSVGContainer {g} at (0,100) size 800x100
       RenderSVGRect {rect} at (0,100) size 800x100 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=100.00] [width=800.00] [height=100.00]
-        [masker="Mask"] RenderSVGResourceMasker {mask} at (0,0) size 800x300
+        [masker="Mask"] LayoutSVGResourceMasker {mask} at (0,0) size 800x300