make use of user timing api if available (#998)
make use of user timing api if available (#998)


Alex-Sokolov/ru.vue-router,Atinux/vue-router,anishkny/vue-router,anishkny/vue-router,Alex-Sokolov/ru.vue-router,Atinux/vue-router,Alex-Sokolov/ru.vue-router,anishkny/vue-router,vuejs/vue-router,vuejs/vue-router,Atinux/vue-router,vuejs/vue-router