Revert of Mandoline: Remove native_viewport.mojom

components/view_manager/event_dispatcher.cc

Index: components/view_manager/event_dispatcher.cc
diff --git a/components/view_manager/event_dispatcher.cc b/components/view_manager/event_dispatcher.cc
index edc2bc5b1b180cfaacb1b243bdd2ff49a8dbac55..a06e7c22bf59d0cbd3c8c130b68176e0b5f0b1c5 100644
--- a/components/view_manager/event_dispatcher.cc
+++ b/components/view_manager/event_dispatcher.cc
@@ -30,11 +30,15 @@
   accelerators_.erase(Accelerator(keyboard_code, flags));
 }
 
-void EventDispatcher::OnEvent(mojo::EventPtr event) {
+void EventDispatcher::OnEvent(mojo::EventPtr event,
+                              const OnEventCallback& callback) {
+  callback.Run();
+
   if (event->pointer_data) {
     const gfx::Point root_point(static_cast<int>(event->pointer_data->x),
                                 static_cast<int>(event->pointer_data->y));
     ServerView* target = connection_manager_->GetFocusedView();
+    ;
     if (event->action == mojo::EVENT_TYPE_POINTER_DOWN || !target) {
       target = FindDeepestVisibleView(connection_manager_->root(), root_point);
       CHECK(target);