* 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:
Mall's on fire! Time for a costume change and some supering! But is this ninja looking guy and this sleepy looking guy too much for King Nilus and Everywhere Kid to handle on their own? And hey! Sergio! Stop touching things in your vampire uncle's creepy looking library! That's probably not a good idea!