Use Shadow DOM v1 APIs for Shadow DOM v1 tests

third_party/WebKit/LayoutTests/shadow-dom/event-path-closed-shadowroot-expected.txt

-Event.path should include only unclosed nodes.
-
-Dispaching a click event on #target_open, listening on #target_open.
-PASS eventPath.length is 9
-
-event.path for #target_open:
-#target_open, #open_shadow_in_open_shadow, #inner_open, #open_shadow, #host_open, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], [object Window], length: 9
-
-Dispaching a click event on #target_closed, listening on #target_closed.
-PASS eventPath.length is 9
-
-event.path for #target_closed:
-#target_closed, #open_shadow_in_closed_shadow, #inner_closed, #closed_shadow, #host_closed, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], [object Window], length: 9
-
-Dispaching a click event on #target_open, listening on document.body.
-PASS eventPath.length is 9
-
-event.path for #target_open:
-#target_open, #open_shadow_in_open_shadow, #inner_open, #open_shadow, #host_open, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], [object Window], length: 9
-
-Dispaching a click event on #target_closed, listening on document.body.
-PASS eventPath.length is 5
-
-event.path for #target_closed:
-#host_closed, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], [object Window], length: 5
-PASS successfullyParsed is true
-
-TEST COMPLETE
-