Bug 1595587 [wpt PR 19870] - Update interfaces/pointerevents.idl, a=testonly

Automatic update from web-platform-tests
Update interfaces/pointerevents.idl (#19870)

Source: https://github.com/tidoust/reffy-reports/blob/99d8a4a/ed/idl/pointerevents.idl
Build: https://travis-ci.org/tidoust/reffy-reports/builds/610489327
--

wpt-commits: 3556a6c237921d0d2acc250e41807377b77212a3
wpt-pr: 19870

testing/web-platform/tests/interfaces/pointerevents.idl

@@ -14,6 +14,8 @@ dictionary PointerEventInit : MouseEventInit {
     long        twist = 0;
     DOMString   pointerType = "";
     boolean     isPrimary = false;
+    sequence<PointerEvent> coalescedEvents = [];
+    sequence<PointerEvent> predictedEvents = [];
 };
 
 [Exposed=Window]
@@ -29,6 +31,8 @@ interface PointerEvent : MouseEvent {
     readonly        attribute long        twist;
     readonly        attribute DOMString   pointerType;
     readonly        attribute boolean     isPrimary;
+    sequence<PointerEvent> getCoalescedEvents();
+    sequence<PointerEvent> getPredictedEvents();
 };
 
 partial interface Element {