* 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:
England, 1962. By day, Terry Sharp is a successful director of horror films, consumer of cocktails, and chaser of skirts. By night, the horror is real as he battles tirelessly against a Satanic conspiracy that reaches the highest levels of government. Sharp's willing to go to hell... so you won't have to.