Add tests for |undefined| and |null| in SVG interfaces

LayoutTests/svg/dom/undefined-null-expected.txt

+Check that |undefined| and |null| arguments do not cause crashes, but do throw exceptions.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+SVGGeometryElement
+
+isPointInFill(SVGPoint point)
+PASS circle.isPointInFill(point) did not throw exception.
+
+isPointInStroke(SVGPoint point)
+PASS circle.isPointInStroke(point) did not throw exception.
+
+
+SVGSVGElement
+
+getIntersectionList(SVGRect rect, SVGElement? referenceElement)
+PASS svg.getIntersectionList(rect, svg) did not throw exception.
+PASS svg.getIntersectionList(null, svg) threw exception TypeError: Failed to execute 'getIntersectionList' on 'SVGSVGElement': parameter 1 is not of type 'SVGRect'..
+PASS svg.getIntersectionList(rect, undefined) did not throw exception.
+PASS svg.getIntersectionList(rect, null) did not throw exception.
+
+getEnclosureList(SVGRect rect, SVGElement? referenceElement)
+PASS svg.getEnclosureList(rect, svg) did not throw exception.
+PASS svg.getEnclosureList(null, svg) threw exception TypeError: Failed to execute 'getEnclosureList' on 'SVGSVGElement': parameter 1 is not of type 'SVGRect'..
+PASS svg.getEnclosureList(rect, undefined) did not throw exception.
+PASS svg.getEnclosureList(rect, null) did not throw exception.
+
+checkIntersection(SVGElement element, SVGRect rect)
+PASS svg.checkIntersection(svg, rect) did not throw exception.
+PASS svg.checkIntersection(null, rect) threw exception TypeError: Failed to execute 'checkIntersection' on 'SVGSVGElement': parameter 1 is not of type 'SVGElement'..
+PASS svg.checkIntersection(svg, null) threw exception TypeError: Failed to execute 'checkIntersection' on 'SVGSVGElement': parameter 2 is not of type 'SVGRect'..
+
+checkEnclosure(SVGElement element, SVGRect rect)
+PASS svg.checkEnclosure(svg, rect) did not throw exception.
+PASS svg.checkEnclosure(null, rect) threw exception TypeError: Failed to execute 'checkEnclosure' on 'SVGSVGElement': parameter 1 is not of type 'SVGElement'..
+PASS svg.checkEnclosure(svg, null) threw exception TypeError: Failed to execute 'checkEnclosure' on 'SVGSVGElement': parameter 2 is not of type 'SVGRect'..
+
+SVGTransform createSVGTransformFromMatrix([Default=Undefined] optional SVGMatrix matrix)
+PASS svg.createSVGTransformFromMatrix(matrix) did not throw exception.
+PASS svg.createSVGTransformFromMatrix(undefined) threw exception TypeError: Failed to execute 'createSVGTransformFromMatrix' on 'SVGSVGElement': parameter 1 is not of type 'SVGMatrix'..
+PASS svg.createSVGTransformFromMatrix(null) threw exception TypeError: Failed to execute 'createSVGTransformFromMatrix' on 'SVGSVGElement': parameter 1 is not of type 'SVGMatrix'..
+
+
+SVGTextContentElement
+
+getCharNumAtPosition(SVGPoint point)
+PASS text.getCharNumAtPosition(point) did not throw exception.
+PASS text.getCharNumAtPosition(null) threw exception TypeError: Failed to execute 'getCharNumAtPosition' on 'SVGTextContentElement': parameter 1 is not of type 'SVGPoint'..
+PASS successfullyParsed is true
+
+TEST COMPLETE
+