It's likely this was actually a bicyclist, not a pedestrian.

The police are saying pedestrian walking outside the crosswalk but here's a picture of the crumpled bicycle: https://twitter.com/daiwaka/status/975767445859287042

You can see it's next to a sign. That sign lets us determine exactly where it happened on Google street view: https://www.google.com/maps/@33.4370667,-111.9430321,3a,75y,...

It's exactly where the vehicle lane crosses the bike line approaching the intersection. Mostly likely the Uber and bike collided when the Uber was crossing into the right turn lane.