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

LayoutTests/platform/linux/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt

Index: LayoutTests/platform/linux/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt
diff --git a/LayoutTests/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt b/LayoutTests/platform/linux/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt
similarity index 86%
copy from LayoutTests/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt
copy to LayoutTests/platform/linux/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt
index 9e14f1e5780fc14c9ff46896d68b44a3a7c2d5ae..47df764db91406134920e2e53eac8de76dd3f1f4 100644
--- a/LayoutTests/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt
+++ b/LayoutTests/platform/linux/svg/W3C-SVG-1.1-SE/filters-felem-01-b-expected.txt
@@ -3,13 +3,13 @@ layer at (0,0) size 480x360
 layer at (0,0) size 480x360
   RenderSVGRoot {svg} at (0,0) size 480x360
     RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-    RenderSVGContainer {g} at (82,20) size 364x264
+    RenderSVGContainer {g} at (82,19) size 364x265
       RenderSVGHiddenContainer {defs} at (0,0) size 0x0
         RenderSVGResourceFilter {filter} [id="null"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
         RenderSVGResourceFilter {filter} [id="nullreg"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
-      RenderSVGContainer {g} at (90,20) size 80x114
-        RenderSVGEllipse {circle} at (100,30) size 60x60 [fill={[type=SOLID] [color=#FF0000]}] [cx=130.00] [cy=60.00] [r=30.00]
-        RenderSVGEllipse {circle} at (90,20) size 80x80 [fill={[type=SOLID] [color=#00FF00]}] [cx=130.00] [cy=60.00] [r=40.00]
+      RenderSVGContainer {g} at (89,19) size 82x115
+        RenderSVGEllipse {circle} at (99,29) size 62x62 [fill={[type=SOLID] [color=#FF0000]}] [cx=130.00] [cy=60.00] [r=30.00]
+        RenderSVGEllipse {circle} at (89,19) size 82x82 [fill={[type=SOLID] [color=#00FF00]}] [cx=130.00] [cy=60.00] [r=40.00]
         RenderSVGText {text} at (95,114) size 70x20 contains 1 chunk(s)
           RenderSVGInlineText {#text} at (0,0) size 69x20
             chunk 1 (middle anchor) text run 1 at (95.69,130.00) startOffset 0 endOffset 1 width 14.44: "N"
@@ -17,7 +17,7 @@ layer at (0,0) size 480x360
             chunk 1 (middle anchor) text run 3 at (132.37,130.00) startOffset 4 endOffset 7 width 14.44: "ilt"
             chunk 1 (middle anchor) text run 4 at (146.53,130.00) startOffset 7 endOffset 9 width 17.78: "er"
       RenderSVGContainer {g} at (82,162) size 96x122
-        RenderSVGEllipse {circle} at (100,180) size 60x60 [fill={[type=SOLID] [color=#00FF00]}] [cx=130.00] [cy=210.00] [r=30.00]
+        RenderSVGEllipse {circle} at (99,179) size 62x62 [fill={[type=SOLID] [color=#00FF00]}] [cx=130.00] [cy=210.00] [r=30.00]
         RenderSVGEllipse {circle} at (82,162) size 96x96 [fill={[type=SOLID] [color=#FF0000]}] [cx=130.00] [cy=210.00] [r=40.00]
           [filter="null"] RenderSVGResourceFilter {filter} at (82,162) size 96x96
         RenderSVGText {text} at (91,264) size 78x20 contains 1 chunk(s)
@@ -25,9 +25,9 @@ layer at (0,0) size 480x360
             chunk 1 (middle anchor) text run 1 at (91.27,280.00) startOffset 0 endOffset 6 width 45.56: "Null f"
             chunk 1 (middle anchor) text run 2 at (136.79,280.00) startOffset 6 endOffset 9 width 14.44: "ilt"
             chunk 1 (middle anchor) text run 3 at (150.95,280.00) startOffset 9 endOffset 11 width 17.78: "er"
-      RenderSVGContainer {g} at (252,20) size 156x114
-        RenderSVGEllipse {circle} at (300,30) size 60x60 [fill={[type=SOLID] [color=#00FF00]}] [cx=330.00] [cy=60.00] [r=30.00]
-        RenderSVGEllipse {circle} at (290,20) size 80x80 [fill={[type=SOLID] [color=#FF0000]}] [cx=330.00] [cy=60.00] [r=40.00]
+      RenderSVGContainer {g} at (252,19) size 156x115
+        RenderSVGEllipse {circle} at (299,29) size 62x62 [fill={[type=SOLID] [color=#00FF00]}] [cx=330.00] [cy=60.00] [r=30.00]
+        RenderSVGEllipse {circle} at (289,19) size 82x82 [fill={[type=SOLID] [color=#FF0000]}] [cx=330.00] [cy=60.00] [r=40.00]
         RenderSVGText {text} at (252,114) size 156x20 contains 1 chunk(s)
           RenderSVGInlineText {#text} at (0,0) size 155x20
             chunk 1 (middle anchor) text run 1 at (252.78,130.00) startOffset 0 endOffset 1 width 14.44: "N"
@@ -37,8 +37,8 @@ layer at (0,0) size 480x360
             chunk 1 (middle anchor) text run 5 at (336.40,130.00) startOffset 9 endOffset 14 width 38.92: "ent f"
             chunk 1 (middle anchor) text run 6 at (375.28,130.00) startOffset 14 endOffset 17 width 14.44: "ilt"
             chunk 1 (middle anchor) text run 7 at (389.44,130.00) startOffset 17 endOffset 19 width 17.78: "er"
-      RenderSVGContainer {g} at (214,180) size 232x104
-        RenderSVGEllipse {circle} at (300,180) size 60x60 [fill={[type=SOLID] [color=#00FF00]}] [cx=330.00] [cy=210.00] [r=30.00]
+      RenderSVGContainer {g} at (214,179) size 232x105
+        RenderSVGEllipse {circle} at (299,179) size 62x62 [fill={[type=SOLID] [color=#00FF00]}] [cx=330.00] [cy=210.00] [r=30.00]
         RenderSVGEllipse {circle} at (322,202) size 16x16 [fill={[type=SOLID] [color=#FF0000]}] [cx=330.00] [cy=210.00] [r=40.00]
           [filter="nullreg"] RenderSVGResourceFilter {filter} at (322,202) size 16x16
         RenderSVGText {text} at (214,264) size 232x20 contains 1 chunk(s)