1 Insert a style element into a shadow tree affecting the host.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS getComputedStyle(host2).color is "rgb(255, 0, 0)"
7 PASS internals.updateStyleAndReturnAffectedElementCount() is 2
8 PASS getComputedStyle(host2).color is "rgb(0, 128, 0)"
9 PASS successfullyParsed is true