window.scroll() without params should be ignored or throw an error

LayoutTests/fast/dom/script-tests/non-numeric-values-numeric-parameters.js

 description(
 'This tests the behavior of non-numeric values in contexts where the DOM has a numeric parameter.'
 );
 
 function nonNumericPolicy(template)
 {
     var x = 0;
     try {
         eval(template);
     } catch (e) {
@@ skipping 321 matching lines @@
 
 shouldBe("nonNumericPolicy('document.createTreeWalker(document, x, null, false)')", "'any type allowed'");
 
 // UIEvent
 
 shouldBe("nonNumericPolicy('document.createEvent(\"UIEvent\").initUIEvent(\"a\", false, false, null, x)')", "'any type allowed'");
 
 // Window
 
 shouldBe("nonNumericPolicy('window.scrollBy(x, 0)')", "'any type allowed'");
-shouldBe("nonNumericPolicy('window.scrollBy(0, x)')", "'any type allowed'");
+shouldBe("nonNumericPolicy('window.scrollBy(0, x)')", "'any type allowed (but not omitted)'");
 shouldBe("nonNumericPolicy('window.scrollTo(x, 0)')", "'any type allowed'");
-shouldBe("nonNumericPolicy('window.scrollTo(0, x)')", "'any type allowed'");
+shouldBe("nonNumericPolicy('window.scrollTo(0, x)')", "'any type allowed (but not omitted)'");
 shouldBe("nonNumericPolicy('window.scroll(x, 0)')", "'any type allowed'");
-shouldBe("nonNumericPolicy('window.scroll(0, x)')", "'any type allowed'");
+shouldBe("nonNumericPolicy('window.scroll(0, x)')", "'any type allowed (but not omitted)'");
 shouldBe("nonNumericPolicy('window.moveBy(x, 0)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.moveBy(0, x)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.moveTo(x, 0)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.moveTo(0, x)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.resizeBy(x, 0)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.resizeBy(0, x)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.resizeTo(x, 0)')", "'any type allowed'");
 shouldBe("nonNumericPolicy('window.resizeTo(0, x)')", "'any type allowed'");
 // Not tested: openDatabase.
 
@@ skipping 278 matching lines @@
 ../../../../WebCore/svg/SVGSVGElement.idl:                 attribute float currentScale
 
 ../../../../WebCore/svg/SVGMatrix.idl:        attribute double a;
 ../../../../WebCore/svg/SVGMatrix.idl:        attribute double b;
 ../../../../WebCore/svg/SVGMatrix.idl:        attribute double c;
 ../../../../WebCore/svg/SVGMatrix.idl:        attribute double d;
 ../../../../WebCore/svg/SVGMatrix.idl:        attribute double e;
 ../../../../WebCore/svg/SVGMatrix.idl:        attribute double f;
 
 */