cros: Tweak DeviceStateMixin

Just went through all cases on a real device and corrected the mixin a
bit.

Bug: 952855
Change-Id: I941473ce9ea2bf92b5d8c70637a5a1b4077b3a41
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1615143
Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Commit-Queue: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661294}
1 file changed