* 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:
'REED GUNTHER IN A STALAC-TIGHT SPOT!' Reed Gunther and his grizzly bear Sterling venture into a spooky abandoned mine in search of hidden gold, despite the warnings from the town loony that something dangerous lays hidden in the caves! But what does he know? He's crazy... right?