tree 6809720bb8721ae38855708243c6640d81d86642
parent b3b4db7facc50f528df84e5eeb9f89d94a12252a
author Patrick Venture <venture@google.com> 1557946925 -0700
committer Patrick Venture <venture@google.com> 1557947851 -0700

firmware_handler: use enum class type for UpdateState

The UpdateState isn't a number as much as a state, therefore there are
no negative side-effects to using an enum class.  The enum itself was
already declared inside the class, therefore limiting its scope, but
this further limits it.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I9248d12c4d3d1c218f110b3457806822da3ba6e8