While working on this feature I found a bug in `dart:html`:  [Issue 17625: Reading InputElement.valueAsDate results in NullError (Cannot call "getTime" on null), but should just be null value](https://code.google.com/p/dart/issues/detail?id=17625).

The `if(!SKIP)` is there so that I can quickly enable all the tests when running under Dartium and disable those tests that fail under Chrome.  This is temporary until  [issue 17625](https://code.google.com/p/dart/issues/detail?id=17625) is resolved.