* 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 First American and U.S.Angel star in a docu-soap in "Justice in Tights!" by Alan Moore & Jim Baikie; Splash Brannigan takes on "Testostor the Terrible!" at the Coffeeburg Comicon by Alan Moore & Hilary Barta; Cobweb appears as a series of newspaper strips by Alan Moore & Melinda Gebbie; Greyshirt "Thinx" with Alan Moore & Rick Veitch.