* 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:
"Run Riot" part 1! Gorilla Grodd explodes out of his prison cell, but he's still trapped in Iron Heights--along with some of the worst villains in the DCU, including Dr. Alchemy, Peek-A-Boo, Tar Pit, and Double Down. It's a riot that the Flash might not be able to contain before it gets even worse!