Force named arguments in constructors.

tests/html/element_constructor_1_test.dart

Index: tests/html/element_constructor_1_test.dart
diff --git a/tests/html/element_constructor_1_test.dart b/tests/html/element_constructor_1_test.dart
index 2b010aed75b976fb8f55d4ee54d38982b62671aa..cf4e43fe51a331f4898fcbfc012e46b0050d7c98 100644
--- a/tests/html/element_constructor_1_test.dart
+++ b/tests/html/element_constructor_1_test.dart
@@ -20,8 +20,7 @@ main() {
     });
 
   test('anchor2', () {
-      // OPTIONALS var e = new AnchorElement(href: '#blah');
-      var e = new AnchorElement('#blah');
+      var e = new AnchorElement(href: '#blah');
       Expect.isTrue(e is AnchorElement);
       Expect.isTrue(e.href.endsWith('#blah'));
     });
@@ -44,8 +43,7 @@ main() {
     });
 
   test('canvas2', () {
-      // OPTIONALS var e = new CanvasElement(height: 100, width: 200);
-      var e = new CanvasElement(200, 100);
+      var e = new CanvasElement(height: 100, width: 200);
       Expect.isTrue(e is CanvasElement);
       Expect.equals(200, e.width);
       Expect.equals(100, e.height);