tree fc76d28987d7e9437c66377e2d90d2338b08d462
parent 524027761e00c014fbe7e52741ca82bf6e6f1dca
author Siarhei Vishniakou <svv@google.com> 1571768616 -0700
committer Siarhei Vishniakou <svv@google.com> 1571778048 -0700

Use enum class for DropReason

Using enum class provides type safety and helps ensure there are no
missed switch/case statements at compile time.

Bug: 70668286
Test: presubmit
Change-Id: Ia3d761d2aec0694edcf8ce24643f17e25cd79a1b