Add Event.scoped

third_party/WebKit/LayoutTests/fast/dom/shadow/events-stopped-at-shadow-boundary-expected.txt

 CONSOLE WARNING: Calling Element.createShadowRoot() for an element which already hosts a shadow root is deprecated. See https://www.chromestatus.com/features/4668884095336448 for more details.
-Tests to ensure that some kinds of events are stopeed at shadow boundary.
+Tests to ensure that all kinds of events are not stopeed at shadow boundary if created by users.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-Other events than "click" should be stopped at shadow boundary.  A "click" is added for the purpose of comparing results.
+None of the events should be stopped at a Shadow boundary if created by users.
 
   abort
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   select
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   change
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   reset
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   resize
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   scroll
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   selectstart
      @target (target: target)
      @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   load
      @target (target: target)
      @parent-of-target (target: target)
-
-  error
-     @target (target: target)
-     @parent-of-target (target: target)
+     @host (target: host)
+     @top (target: host)
 
   click
      @target (target: target)
      @parent-of-target (target: target)
      @host (target: host)
      @top (target: host)
 
 An event fired on a distributed child should not be stopped at the shadow boundary of its host (host2), but should be stopped at the nearest shadow boundary (host1).
 
   selectstart
      @distributed-child (target: distributed-child)
      @content (target: distributed-child)
      @parent-of-content (target: distributed-child)
      @host2 (target: distributed-child)
+     @host1 (target: host1)
 
 An event is dispatched on a node in an older shadow tree. The older and the younger shadow root should receive the event, however, the shadow host shouldn't
 
   selectstart
      @target (target: target)
      @older-shadow-root (target: target)
      @shadow-insertion-point (target: target)
      @younger-shadow-root (target: target)
+     @shadow-host (target: shadow-host)
 PASS successfullyParsed is true
 
 TEST COMPLETE