* 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:
Uncle Henry can't pay the mortgage, so he, Aunt Em and Dorothy must leave their Kansas home. Where can they go? To the Land of Oz, of course! Dorothy and the Wizard take Em and Henry on a grand tour, discovering knowledge pills and living paper dolls, solving living puzzles, suffering abuse from living kitchen utensils and drooling over living baked goods - but will anyone in Oz be left living after the Nomes attack, allied with the highly disagreeable Growleywogs?