> What makes that table render? Is it the "devices" field in the bot's state dict?

Yes.  It's hardcoded atm to say "Android Devices" [1]

Here's a skia ChromeOS bot for comparison: https://chromium-swarm.appspot.com/bot?id=skia-rpi-111  It seems that we should agree on a set of dimensions for ChromeOS bots to be consistent.

> What would it take to get that to say "ChromeOS Devices" for cros bots and "Android Devices" for android bots? Also, how are the "Battery", "Avg Temp", and "State" fields populated?

Not much.  Assuming we can agree on a consistent set of metrics that we care about for ChromeOS devices, we can get them populated as well.

let device = Any value in the devices object in the state object.
Battery -> looks for device.battery.level, returns it
Avg Temp -> looks for device.temp object and averages the values
State -> looks for device.state and returns it

We don't have to stick to battery, temp, state for ChromeOS, the could be different things entirely if that would be more useful for you.


[1] https://chromium.googlesource.com/infra/luci/luci-py/+/master/appengine/swarming/ui/res/imp/botpage/device-summary.html#54