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

LayoutTests/platform/linux/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt

Index: LayoutTests/platform/linux/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt
diff --git a/LayoutTests/platform/win/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt b/LayoutTests/platform/linux/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt
similarity index 93%
copy from LayoutTests/platform/win/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt
copy to LayoutTests/platform/linux/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt
index e26b895c9bd4d2353d2eda01fa61cbaab654ccf9..01394eb448eecdc8e3d89f5f95da2c7bf9261b04 100644
--- a/LayoutTests/platform/win/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt
+++ b/LayoutTests/platform/linux/svg/W3C-SVG-1.1/painting-marker-01-f-expected.txt
@@ -2,7 +2,7 @@ layer at (0,0) size 480x360
   RenderView at (0,0) size 480x360
 layer at (0,0) size 480x360
   RenderSVGRoot {svg} at (0,0) size 480x360
-    RenderSVGContainer {g} at (122,17) size 190x271
+    RenderSVGContainer {g} at (122,17) size 193x271
       RenderSVGResourceMarker {marker} [id="marker1"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
         RenderSVGRect {rect} at (0,0) size 2x2 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
       RenderSVGResourceMarker {marker} [id="marker2"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=auto]
@@ -10,7 +10,7 @@ layer at (0,0) size 480x360
       RenderSVGResourceMarker {marker} [id="markerStart"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
         RenderSVGRect {rect} at (0,0) size 2x2 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
       RenderSVGResourceMarker {marker} [id="markerMiddle"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
-        RenderSVGEllipse {circle} at (0,0) size 2x2 [fill={[type=SOLID] [color=#008000]}] [cx=5.00] [cy=5.00] [r=5.00]
+        RenderSVGEllipse {circle} at (0,0) size 3x3 [fill={[type=SOLID] [color=#008000]}] [cx=5.00] [cy=5.00] [r=5.00]
       RenderSVGResourceMarker {marker} [id="markerEnd"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
         RenderSVGPath {path} at (0,0) size 2x2 [fill={[type=SOLID] [color=#0000FF]}] [data="M 5 0 L 10 10 L 0 10 Z"]
       RenderSVGText {text} at (170,17) size 89x16 contains 1 chunk(s)
@@ -28,13 +28,13 @@ layer at (0,0) size 480x360
       RenderSVGText {text} at (145,112) size 136x16 contains 1 chunk(s)
         RenderSVGInlineText {#text} at (0,0) size 136x16
           chunk 1 text run 1 at (145.00,125.00) startOffset 0 endOffset 21 width 136.00: "Start, Middle and End"
-      RenderSVGPath {path} at (122,127) size 66x66 [stroke={[type=SOLID] [color=#000000] [stroke width=8.00]}] [start marker=markerStart] [middle marker=markerMiddle] [end marker=markerEnd] [data="M 130 135 L 180 135 L 180 185"]
-      RenderSVGContainer {g} at (242,127) size 66x66 [transform={m=((1.00,0.00)(0.00,1.00)) t=(120.00,0.00)}]
+      RenderSVGPath {path} at (122,126) size 67x67 [stroke={[type=SOLID] [color=#000000] [stroke width=8.00]}] [start marker=markerStart] [middle marker=markerMiddle] [end marker=markerEnd] [data="M 130 135 L 180 135 L 180 185"]
+      RenderSVGContainer {g} at (242,120) size 73x73 [transform={m=((1.00,0.00)(0.00,1.00)) t=(120.00,0.00)}]
         RenderSVGPath {path} at (250,131) size 54x54 [stroke={[type=SOLID] [color=#000000] [stroke width=8.00]}] [data="M 130 135 L 180 135 L 180 185"]
         RenderSVGContainer {g} at (242,127) size 16x16 [transform={m=((1.60,0.00)(0.00,1.60)) t=(122.00,127.00)}]
           RenderSVGRect {rect} at (242,127) size 16x16 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
-        RenderSVGContainer {g} at (292,127) size 16x16 [transform={m=((1.60,0.00)(0.00,1.60)) t=(172.00,127.00)}]
-          RenderSVGEllipse {circle} at (292,127) size 16x16 [fill={[type=SOLID] [color=#008000]}] [cx=5.00] [cy=5.00] [r=5.00]
+        RenderSVGContainer {g} at (285,120) size 30x30 [transform={m=((1.60,0.00)(0.00,1.60)) t=(172.00,127.00)}]
+          RenderSVGEllipse {circle} at (285,120) size 30x30 [fill={[type=SOLID] [color=#008000]}] [cx=5.00] [cy=5.00] [r=5.00]
         RenderSVGContainer {g} at (292,177) size 16x16 [transform={m=((1.60,0.00)(0.00,1.60)) t=(172.00,177.00)}]
           RenderSVGPath {path} at (292,177) size 16x16 [fill={[type=SOLID] [color=#0000FF]}] [data="M 5 0 L 10 10 L 0 10 Z"]
       RenderSVGText {text} at (145,207) size 136x16 contains 1 chunk(s)