Change SVG paint server fallback for a non-existent URL

LayoutTests/svg/custom/invalid-uri-stroke-expected.txt

-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x600
-  RenderSVGRoot {svg} at (0,0) size 694x214
-    RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-      RenderSVGResourceLinearGradient {linearGradient} [id="myGradient"] [gradientUnits=objectBoundingBox] [start=(0,0)] [end=(0,1)]
-        RenderSVGGradientStop {stop} [offset=0.00] [color=#00CC00]
-        RenderSVGGradientStop {stop} [offset=1.00] [color=#006600]
-    RenderSVGContainer {g} at (0,0) size 101x101
-      RenderSVGRect {rect} at (0,0) size 101x101 [stroke={[type=LINEAR-GRADIENT] [id="myGradient"]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
-      RenderSVGRect {rect} at (0,0) size 101x101 [stroke={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
-    RenderSVGContainer {g} at (10,116) size 684x98
-      RenderSVGText {text} at (10,116) size 269x18 contains 1 chunk(s)
-        RenderSVGInlineText {#text} at (0,0) size 269x18
-          chunk 1 text run 1 at (10.00,130.00) startOffset 0 endOffset 40 width 269.00: "The above stroke of rect should be BLUE."
-      RenderSVGText {text} at (10,136) size 657x18 contains 1 chunk(s)
-        RenderSVGInlineText {#text} at (0,0) size 657x18
-          chunk 1 text run 1 at (10.00,150.00) startOffset 0 endOffset 99 width 657.00: "SVG 1.1 FULL says there should be a \"highly perceivable error\" message when an invalid URI is used."
-      RenderSVGText {text} at (10,156) size 468x18 contains 1 chunk(s)
-        RenderSVGInlineText {#text} at (0,0) size 468x18
-          chunk 1 text run 1 at (10.00,170.00) startOffset 0 endOffset 77 width 468.00: "Browsers don't display such an error, instead use some sort of fill-fallback."
-      RenderSVGText {text} at (10,176) size 684x18 contains 1 chunk(s)
-        RenderSVGInlineText {#text} at (0,0) size 684x18
-          chunk 1 text run 1 at (10.00,190.00) startOffset 0 endOffset 59 width 345.00: "If there's an non-existent uri, but no fallback specified, "
-          chunk 1 text run 1 at (355.00,190.00) startOffset 0 endOffset 57 width 339.00: "the stroke of the object is inherited from parent object."
-      RenderSVGText {text} at (10,196) size 555x18 contains 1 chunk(s)
-        RenderSVGInlineText {#text} at (0,0) size 555x18
-          chunk 1 text run 1 at (10.00,210.00) startOffset 0 endOffset 84 width 555.00: "This has recently been changed in SVG 1.1 2nd edition. Our result matches Opera now."