Converting dart:html to use DateTime rather than Date.

tests/html/input_element_test.dart

Index: tests/html/input_element_test.dart
diff --git a/tests/html/input_element_test.dart b/tests/html/input_element_test.dart
index cee9804ac6d27888e93df77e002b6571bd3943da..fe90511d817eaba3210741326d7171836e980759 100644
--- a/tests/html/input_element_test.dart
+++ b/tests/html/input_element_test.dart
@@ -125,6 +125,15 @@ main() {
 
     test('time', () {
       check(new TimeInputElement(), 'time', TimeInputElement.supported);
+      if (TimeInputElement.supported) {
+        var element = new TimeInputElement();
+        var now = new DateTime.now();
+        element.valueAsDate = now;
+        expect(element.valueAsDate is DateTime, isTrue);
+
+        // Bug 8813, setting it is just going to the epoch.
+        //expect(element.valueAsDate, now);
+      }
     });
 
     test('datetime-local', () {