* Client-Side Metrics Include
* Wiki: https://tiny.amazon.com/cpso0wg6
* Needs to be included at the top of pages because it tracks latency--
* ue_t0 needs to be as close to body load as possible.
* - ue.tag maps to URLType dimension of OnlineQueryLog in PMET. Because we cannot add
* custome data to other dimensions in PMET through CSM, we are replicating it thrice to
* cover each store, page type, and the intersections of the two.
* - Whitelists are listed in the usage guide:
The Flash of the Silver Age races onto the scene! After being doused in chemicals and struck by a bolt of lightning, police scientist Barry Allen became the Flash, the Fastest Man Alive! As the defender of Central City, the Flash battles against his colorful Rogues Gallery, including Captain Cold, Mirror Master and more!