Fix getBBox() returning (0,0) bug when width or height is zero

LayoutTests/platform/linux/svg/clip-path/clip-path-use-as-child5-expected.txt

Index: LayoutTests/platform/linux/svg/clip-path/clip-path-use-as-child5-expected.txt
diff --git a/LayoutTests/svg/clip-path/clip-path-use-as-child5-expected.txt b/LayoutTests/platform/linux/svg/clip-path/clip-path-use-as-child5-expected.txt
similarity index 76%
copy from LayoutTests/svg/clip-path/clip-path-use-as-child5-expected.txt
copy to LayoutTests/platform/linux/svg/clip-path/clip-path-use-as-child5-expected.txt
index f04a9ce018e94a22ee5b4fbc5894ee5040b5aa78..a5397187393e8b435b4a8887cfb4d78628f5cd58 100644
--- a/LayoutTests/svg/clip-path/clip-path-use-as-child5-expected.txt
+++ b/LayoutTests/platform/linux/svg/clip-path/clip-path-use-as-child5-expected.txt
@@ -3,14 +3,14 @@ layer at (0,0) size 800x600
 layer at (0,0) size 800x600
   RenderSVGRoot {svg} at (10,10) size 100x100
     RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-      RenderSVGEllipse {circle} at (10,10) size 100x100 [fill={[type=SOLID] [color=#000000]}] [cx=60.00] [cy=60.00] [r=50.00]
+      RenderSVGEllipse {circle} at (9,9) size 102x102 [fill={[type=SOLID] [color=#000000]}] [cx=60.00] [cy=60.00] [r=50.00]
       RenderSVGRect {rect} at (0,30) size 10x60 [fill={[type=SOLID] [color=#000000]}] [x=-90.00] [y=30.00] [width=100.00] [height=60.00]
       RenderSVGResourceClipper {clipPath} [id="clip-circle"] [clipPathUnits=userSpaceOnUse]
-        RenderSVGContainer {use} at (10,10) size 100x100
-          RenderSVGEllipse {circle} at (10,10) size 100x100 [fill={[type=SOLID] [color=#000000]}] [cx=60.00] [cy=60.00] [r=50.00]
+        RenderSVGContainer {use} at (9,9) size 102x102
+          RenderSVGEllipse {circle} at (9,9) size 102x102 [fill={[type=SOLID] [color=#000000]}] [cx=60.00] [cy=60.00] [r=50.00]
       RenderSVGResourceClipper {clipPath} [id="clip-rect"] [clipPathUnits=userSpaceOnUse]
         RenderSVGContainer {use} at (10,30) size 100x60 [transform={m=((1.00,0.00)(0.00,1.00)) t=(100.00,0.00)}]
           RenderSVGRect {rect} at (10,30) size 100x60 [fill={[type=SOLID] [color=#000000]}] [x=-90.00] [y=30.00] [width=100.00] [height=60.00]
     RenderSVGRect {rect} at (10,10) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=100.00] [height=100.00]
-      [clipPath="clip-circle"] RenderSVGResourceClipper {clipPath} at (10,10) size 100x100
+      [clipPath="clip-circle"] RenderSVGResourceClipper {clipPath} at (9.50,9.50) size 101x101
     RenderSVGRect {rect} at (10,10) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=100.00] [height=100.00]