For the calls that we make to the MW API, we add a header called X-WMF-UUID that contains the unique install ID of the app. We'd like to include this header into the requests that the Mapbox SDK makes when retrieving tiles.
Also, we should update the User-Agent that Mapbox uses to include information about the current version of the app, and the version of the OS (basically give it the same useragent as our API calls, with a possible addition of the Mapbox SDK version).
Upstream: https://github.com/mapbox/mapbox-gl-native/issues/1993