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

LayoutTests/platform/linux/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt

Index: LayoutTests/platform/linux/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt
diff --git a/LayoutTests/platform/win/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt b/LayoutTests/platform/linux/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt
similarity index 88%
copy from LayoutTests/platform/win/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt
copy to LayoutTests/platform/linux/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt
index a6f5dddfc5ec260663f5290127bff43481c5ec70..477dc384b436bff5431476ccd59ed2a3a5ace6c6 100644
--- a/LayoutTests/platform/win/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt
+++ b/LayoutTests/platform/linux/svg/W3C-SVG-1.1/shapes-intro-01-t-expected.txt
@@ -40,15 +40,15 @@ layer at (0,0) size 480x360
         RenderSVGText {text} at (235,282) size 53x10 contains 1 chunk(s)
           RenderSVGInlineText {#text} at (0,0) size 53x10
             chunk 1 text run 1 at (235.00,290.00) startOffset 0 endOffset 16 width 53.00: "Zero length line"
-      RenderSVGRect {rect} at (0,0) size 0x0 [stroke={[type=SOLID] [color=#000000]}] [x=55.00] [y=55.00] [width=0.00] [height=50.00]
+      RenderSVGRect {rect} at (54,54) size 2x52 [stroke={[type=SOLID] [color=#000000]}] [x=55.00] [y=55.00] [width=0.00] [height=50.00]
       RenderSVGRect {rect} at (0,0) size 0x0 [fill={[type=SOLID] [color=#FF0000]}] [x=55.00] [y=160.00] [width=0.00] [height=50.00]
-      RenderSVGRect {rect} at (0,0) size 0x0 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#00FF00]}] [x=135.00] [y=55.00] [width=25.00] [height=0.00]
+      RenderSVGRect {rect} at (134,54) size 27x2 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#00FF00]}] [x=135.00] [y=55.00] [width=25.00] [height=0.00]
       RenderSVGRect {rect} at (0,0) size 0x0 [fill={[type=SOLID] [color=#00FF00]}] [x=135.00] [y=160.00] [width=25.00] [height=0.00]
       RenderSVGEllipse {circle} at (0,0) size 0x0 [stroke={[type=SOLID] [color=#000000]}] [cx=240.00] [cy=80.00] [r=0.00]
       RenderSVGEllipse {circle} at (0,0) size 0x0 [fill={[type=SOLID] [color=#FF0000]}] [cx=240.00] [cy=185.00] [r=0.00]
-      RenderSVGEllipse {ellipse} at (0,0) size 0x0 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#00FF00]}] [cx=332.00] [cy=80.00] [rx=0.00] [ry=25.00]
+      RenderSVGEllipse {ellipse} at (331,54) size 2x52 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#00FF00]}] [cx=332.00] [cy=80.00] [rx=0.00] [ry=25.00]
       RenderSVGEllipse {ellipse} at (0,0) size 0x0 [fill={[type=SOLID] [color=#00FF00]}] [cx=332.00] [cy=185.00] [rx=0.00] [ry=25.00]
-      RenderSVGEllipse {ellipse} at (0,0) size 0x0 [stroke={[type=SOLID] [color=#000000]}] [cx=411.00] [cy=80.00] [rx=12.00] [ry=0.00]
+      RenderSVGEllipse {ellipse} at (398,79) size 26x2 [stroke={[type=SOLID] [color=#000000]}] [cx=411.00] [cy=80.00] [rx=12.00] [ry=0.00]
       RenderSVGEllipse {ellipse} at (0,0) size 0x0 [fill={[type=SOLID] [color=#FF0000]}] [cx=411.00] [cy=185.00] [rx=12.00] [ry=0.00]
       RenderSVGPath {line} at (0,0) size 0x0 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#000000]}] [x1=240.00] [y1=265.00] [x2=240.00] [y2=265.00]
     RenderSVGText {text} at (10,304) size 261x46 contains 1 chunk(s)