Revert the feature of the <shadow> element as 'a function call' to the previous behavior.

LayoutTests/fast/dom/shadow/event-path-shadow-insertion-point-in-oldest-shadow-root-expected.txt

Index: LayoutTests/fast/dom/shadow/event-path-shadow-insertion-point-in-oldest-shadow-root-expected.txt
diff --git a/LayoutTests/fast/dom/shadow/event-path-shadow-insertion-point-in-oldest-shadow-root-expected.txt b/LayoutTests/fast/dom/shadow/event-path-shadow-insertion-point-in-oldest-shadow-root-expected.txt
index 6bab05434fd2d3feaa5f22fa12f6dd16c0d59b2c..28d78e0a8ff8c84d902744ccdf3aded0b784e4a4 100644
--- a/LayoutTests/fast/dom/shadow/event-path-shadow-insertion-point-in-oldest-shadow-root-expected.txt
+++ b/LayoutTests/fast/dom/shadow/event-path-shadow-insertion-point-in-oldest-shadow-root-expected.txt
@@ -5,29 +5,23 @@ event.path on node #C
 event.path on node #B
 #C, #B, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 7
 
-event.path on node #J
-#C, #B, #J, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
-
-event.path on node #F
-#C, #B, #F, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
-
 event.path on node #X
-#C, #B, #F, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
+#C, #B, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 10
 
 event.path on node #E
-#C, #B, #F, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
+#C, #B, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 10
 
 event.path on node #D
-#C, #B, #F, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
+#C, #B, #X, #E, #D, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 10
 
 event.path on node #I
-#C, #B, #J, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
+#C, #B, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 10
 
 event.path on node #H
-#C, #B, #J, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
+#C, #B, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 10
 
 event.path on node #G
-#C, #B, #J, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 11
+#C, #B, #I, #H, #G, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 10
 
 event.path on node #A
 #C, #B, #A, #sandbox, [object HTMLBodyElement], [object HTMLHtmlElement], [object HTMLDocument], length: 7