buffet: CheckDeviceRegistered works offline
CheckDeviceRegistered previously worked differently if buffet had never
been online vs if it just went offline. Basically it should just care if
the device_reg_info file has a registration configured. Specifically
it shouldn't try to refresh the access_token.
BUG=brillo:785
TEST=FEATURES=test emerge-$BOARD buffet
Change-Id: I7da25f7e9507a131a37fd16efeb2e8e7352985b8
Reviewed-on: https://chromium-review.googlesource.com/264792
Reviewed-by: Nathan Bullock <nathanbullock@google.com>
Tested-by: Nathan Bullock <nathanbullock@google.com>
Commit-Queue: Nathan Bullock <nathanbullock@google.com>
3 files changed
