* 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 Witches of OZ are searching for a lost weapon of power known as the Veridian Scepter. Their quest leads them to the most unlikeliest of places...the farmlands of Kansas and the home of the unlikeliest of heroes...Dorothy Gale. At long last the last realm of power in the Grimm Fairy Tales universe is revealed...and there's never been an Oz quite like this.