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

LayoutTests/platform/linux/svg/transforms/svg-css-transforms-clip-path-expected.txt

Index: LayoutTests/platform/linux/svg/transforms/svg-css-transforms-clip-path-expected.txt
diff --git a/LayoutTests/platform/win/svg/transforms/svg-css-transforms-clip-path-expected.txt b/LayoutTests/platform/linux/svg/transforms/svg-css-transforms-clip-path-expected.txt
similarity index 87%
copy from LayoutTests/platform/win/svg/transforms/svg-css-transforms-clip-path-expected.txt
copy to LayoutTests/platform/linux/svg/transforms/svg-css-transforms-clip-path-expected.txt
index 5ce93fbe8c75e750ecccf2d3e3c0325377b08664..17d7ba03a0da5ee233ad90ffe58324f0d49bdf31 100644
--- a/LayoutTests/platform/win/svg/transforms/svg-css-transforms-clip-path-expected.txt
+++ b/LayoutTests/platform/linux/svg/transforms/svg-css-transforms-clip-path-expected.txt
@@ -22,25 +22,25 @@ layer at (0,0) size 800x579
       RenderText {#text} at (0,0) size 0x0
 layer at (28,85) size 200x200
   RenderBlock (relative positioned) {div} at (10,66.81) size 200x200 [bgcolor=#C0C0C0] [border: (1px solid #000000)]
-    RenderSVGRoot {svg} at (39,95) size 140x141
+    RenderSVGRoot {svg} at (39,95) size 143x144
       RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-        RenderSVGEllipse {circle} at (29,85) size 150x151 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
+        RenderSVGEllipse {circle} at (29,85) size 153x154 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
         RenderSVGResourceClipper {clipPath} [id="clip-circle1"] [clipPathUnits=userSpaceOnUse]
-          RenderSVGContainer {use} at (29,85) size 150x151
-            RenderSVGEllipse {circle} at (29,85) size 150x151 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
-      RenderSVGRect {rect} at (39,95) size 140x141 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=200.00] [height=200.00]
-        [clipPath="clip-circle1"] RenderSVGResourceClipper {clipPath} at (-50,-50) size 200x200
+          RenderSVGContainer {use} at (29,85) size 153x154
+            RenderSVGEllipse {circle} at (29,85) size 153x154 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
+      RenderSVGRect {rect} at (39,95) size 143x144 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=200.00] [height=200.00]
+        [clipPath="clip-circle1"] RenderSVGResourceClipper {clipPath} at (-52.50,-52.50) size 205x205
     RenderText {#text} at (0,0) size 0x0
 layer at (28,352) size 200x200
   RenderBlock (relative positioned) {div} at (10,333.63) size 200x200 [bgcolor=#C0C0C0] [border: (1px solid #000000)]
-    RenderSVGRoot {svg} at (39,362) size 140x141
+    RenderSVGRoot {svg} at (39,362) size 143x144
       RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-        RenderSVGEllipse {circle} at (29,352) size 150x151 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
+        RenderSVGEllipse {circle} at (29,352) size 153x154 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
         RenderSVGResourceClipper {clipPath} [id="clip-circle2"] [clipPathUnits=userSpaceOnUse]
-          RenderSVGContainer {use} at (29,352) size 150x151
-            RenderSVGEllipse {circle} at (29,352) size 150x151 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
-      RenderSVGRect {rect} at (39,362) size 140x141 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=200.00] [height=200.00]
-        [clipPath="clip-circle2"] RenderSVGResourceClipper {clipPath} at (-50,-50) size 200x200
+          RenderSVGContainer {use} at (29,352) size 153x154
+            RenderSVGEllipse {circle} at (29,352) size 153x154 [transform={m=((5.00,0.00)(0.00,5.00)) t=(0.00,0.00)}] [fill={[type=SOLID] [color=#000000]}] [cx=10.00] [cy=10.00] [r=20.00]
+      RenderSVGRect {rect} at (39,362) size 143x144 [fill={[type=SOLID] [color=#008000]}] [x=10.00] [y=10.00] [width=200.00] [height=200.00]
+        [clipPath="clip-circle2"] RenderSVGResourceClipper {clipPath} at (-52.50,-52.50) size 205x205
     RenderText {#text} at (0,0) size 0x0
 layer at (272,85) size 200x200
   RenderBlock (relative positioned) {div} at (10,66.81) size 200x200 [bgcolor=#C0C0C0] [border: (1px solid #000000)]