* 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:
The two most incredible covert action teams the world has ever known-so covert, in fact, that neither knows the other exists-are meeting for the first time ever! Repeat: Danger Girl and G.I. JOE, together. Spies! Girls! Ninjas! COBRA! If your head did not just explode, then you are one of the lucky few remaining that will live to enjoy a summer blockbuster you'll have to see to believe!