NavigationTiming schema tracks mobileMode.
So in theory it should be possible to generate graphs for median first paint for the mobile beta site in production [1].
This would allow us to test changes in the name of performance in the mobile beta before rolling out to production.
Can someone walk me through how to register a new platform? I'm not even sure which codebase this lives in right now...
[1] http://en.m.wikipedia.beta.wmflabs.org/wiki/Barack_Obama?mobileaction=beta
