Tests for ShadowAware.shadowRoot property. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS host.webkitShadowRoot is null PASS root1 is host.webkitShadowRoot PASS root2 is host.webkitShadowRoot PASS hostWithUAShadow.webkitShadowRoot is null PASS successfullyParsed is true TEST COMPLETE