* 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:
When Barry Allen wakes at his desk, he discovers the world has changed. Family is alive, loved ones are strangers, and close friends are different, gone or worse. It's a world on the brink of a cataclysmic war - but where are Earth's Greatest Heroes to stop it? It's a place where America's last hope is Cyborg, who hopes to gather the forces of The Outsider, The Secret 7, SHAZAM!, Citizen Cold and other new and familiar-yet-altered faces! It's a world that could be running out of time, if The Flash can't find the villain who altered the time line!