Add id properties to PointerEvent

services/ui/ws/window_manager_state.cc

Index: services/ui/ws/window_manager_state.cc
diff --git a/services/ui/ws/window_manager_state.cc b/services/ui/ws/window_manager_state.cc
index ef09226adeb96d26bddb006b0ef7641aeaf6f0a9..c73f4d1ed59c8080f5b34f8fca098035cc8247cc 100644
--- a/services/ui/ws/window_manager_state.cc
+++ b/services/ui/ws/window_manager_state.cc
@@ -44,8 +44,8 @@ bool EventsCanBeCoalesced(const ui::Event& one, const ui::Event& two) {
   if (one.type() != ui::ET_POINTER_MOVED)
     return false;
 
-  return one.AsPointerEvent()->pointer_id() ==
-         two.AsPointerEvent()->pointer_id();
+  return one.AsPointerEvent()->pointer_details().id ==
+         two.AsPointerEvent()->pointer_details().id;
 }
 
 std::unique_ptr<ui::Event> CoalesceEvents(std::unique_ptr<ui::Event> first,
@@ -170,7 +170,8 @@ void WindowManagerState::SetDragDropSourceWindow(
   int32_t drag_pointer = PointerEvent::kMousePointerId;
   if (event_awaiting_input_ack_ &&
       event_awaiting_input_ack_->IsPointerEvent()) {
-    drag_pointer = event_awaiting_input_ack_->AsPointerEvent()->pointer_id();
+    drag_pointer =
+        event_awaiting_input_ack_->AsPointerEvent()->pointer_details().id;
   } else {
     NOTIMPLEMENTED() << "Set drag drop set up during something other than a "
                      << "pointer event; rejecting drag.";