* 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:
Linda is protecting a baby who seems to have meta-human powers and the Weather Wizard wants complete control of the tot! Can the Flash keep the kid AND Keystone City safe from blizzards, howling winds, tornadoes, and hurricanes? "Birthright" part 2.