Image() constructor's arguments should not have default values

LayoutTests/fast/js/script-tests/custom-constructors.js

Index: LayoutTests/fast/js/script-tests/custom-constructors.js
diff --git a/LayoutTests/fast/js/script-tests/custom-constructors.js b/LayoutTests/fast/js/script-tests/custom-constructors.js
index fce2ff87e2408f8dc5416a339be0a174dd9e80e1..ce5c42ff70c93a7c68d567489c2971fe9b97c470 100644
--- a/LayoutTests/fast/js/script-tests/custom-constructors.js
+++ b/LayoutTests/fast/js/script-tests/custom-constructors.js
@@ -8,11 +8,20 @@ shouldBeEqualToString("new Image().tagName", "IMG");
 
 shouldBe("new Image().height", "0");
 shouldBe("new Image().width", "0");
+shouldBe("new Image(0).width", "0");
+shouldBe("new Image(0, 0).height", "0");
 shouldBe("new Image(100).width", "100");
 shouldBe("new Image(100, 200).height", "200");
 shouldBe("new Image(-100).width", "-100");
 shouldBe("new Image(-100, -200).height", "-200");
 
+shouldBe("new Image().hasAttribute('height')", "false");
+shouldBe("new Image().hasAttribute('width')", "false");
+shouldBe("new Image(0).hasAttribute('height')", "false");
+shouldBe("new Image(0).hasAttribute('width')", "true");
+shouldBe("new Image(0, 0).hasAttribute('height')", "true");
+shouldBe("new Image(0, 0).hasAttribute('width')", "true");
+
 shouldBeEqualToString("new Image().outerHTML","<img>");
 // FIXME: shouldBeEqualToString strips quotes from the string.
 shouldBeEqualToString("new Image(100, 100).outerHTML.replace(/\"/g, \"'\")", "<img width='100' height='100'>");