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

LayoutTests/svg/custom/empty-merge-expected.txt

Index: LayoutTests/svg/custom/empty-merge-expected.txt
diff --git a/LayoutTests/svg/custom/empty-merge-expected.txt b/LayoutTests/svg/custom/empty-merge-expected.txt
index f4ac5754df5d29c5d9c5dcb0a9f7ac71725b4558..fe90690f602a4cad7978d1dc1c5cc375f888075f 100644
--- a/LayoutTests/svg/custom/empty-merge-expected.txt
+++ b/LayoutTests/svg/custom/empty-merge-expected.txt
@@ -3,14 +3,14 @@ layer at (0,0) size 800x600
 layer at (0,0) size 800x600
   RenderSVGRoot {svg} at (0,0) size 240x120
     RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-      RenderSVGResourceFilter {filter} [id="MyFilter1"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
+      LayoutSVGResourceFilter {filter} [id="MyFilter1"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
         [feMerge mergeNodes="1"]
           [SourceGraphic]
-      RenderSVGResourceFilter {filter} [id="MyFilter2"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
+      LayoutSVGResourceFilter {filter} [id="MyFilter2"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
         [feMerge mergeNodes="1"]
           [feOffset dx="0.00" dy="0.00"]
             [SourceGraphic]
     RenderSVGRect {rect} at (0,0) size 120x120 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=100.00] [height=100.00]
-      [filter="MyFilter1"] RenderSVGResourceFilter {filter} at (0,0) size 120x120
+      [filter="MyFilter1"] LayoutSVGResourceFilter {filter} at (0,0) size 120x120
     RenderSVGRect {rect} at (120,0) size 120x120 [fill={[type=SOLID] [color=#008000]}] [x=130.00] [y=10.00] [width=100.00] [height=100.00]
-      [filter="MyFilter2"] RenderSVGResourceFilter {filter} at (120,0) size 120x120
+      [filter="MyFilter2"] LayoutSVGResourceFilter {filter} at (120,0) size 120x120