* 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:
A homicidal new villain known as Onomatopoeia is hunting down non-super powered heroes, and it looks like Green Arrow may be next on his hit list. But what Onomatopoeia doesn't know is that Ollie's ready to do ANYTHING if it means saving the lives of the people he loves...