CHERRY-PICK: Move some field to optional for storage probing

BUG=none
TEST=manually test

Change-Id: I0bf2c4e8834eb3f68ad6b9dfc8137ca332336755
Original: Change-Id: I4cd4319369aa86e7dfbe6a7ddcf8d9376eb91661
Original: Reviewed-on: https://gerrit.chromium.org/gerrit/64191
Original: Reviewed-by: Katie Roberts-Hoffman <katierh@chromium.org>
Original: Commit-Queue: Katie Roberts-Hoffman <katierh@chromium.org>
Original: Tested-by: Katie Roberts-Hoffman <katierh@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/64737
Reviewed-by: Heng-ruey Hsu <henryhsu@chromium.org>
Tested-by: Heng-ruey Hsu <henryhsu@chromium.org>
Commit-Queue: Heng-ruey Hsu <henryhsu@chromium.org>
1 file changed