Polymer/ShadowDOM — pull request #175 by arv (2013-06-18 16:22:45+00:00)
Title: Disable defaultPrevented test in IE

defaultPrevented always returns false outside the event listener in IE.

https://connect.microsoft.com/IE/feedback/details/790389/event-defaultprevented-returns-false-after-preventdefault-was-called