Fix ownership bug with ViewObserver::OnViewInputEvent

mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc

Index: mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc
diff --git a/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc b/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc
index 82a9fd598cba89d7ca114f2dfeb66f67487f6a5a..e9117fc47e737625cbac331887fe618b3409b597 100644
--- a/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc
+++ b/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc
@@ -648,7 +648,7 @@ void ViewManagerSynchronizer::OnViewInputEvent(
   if (view) {
     FOR_EACH_OBSERVER(ViewObserver,
                       *ViewPrivate(view).observers(),
-                      OnViewInputEvent(view, event.Pass()));
+                      OnViewInputEvent(view, event));
   }
   ack_callback.Run();
 }