* 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 Mocking Dead #3 (of 5): Digital Exclusive Edtion
Attention, Box-Mart Shoppers. There is a sale on brains, guts and other viscera in aisles two, twelve, twenty, thirty-four, eighty-six, a hundred and three, and ... well, all aisles really, because this entire store has been taken over by the MOCKING DEAD BRRAAAAHHHHHHHH!