GitLab

- Deprecate the PROFILE_DESTRUCTION entry which was unused.
- Add explicit numeric values to the remaining entries (as is
  recommended for enums used in UMA histograms).

Bug: 939752
Change-Id: Iedd144b5a958a4bd55c78b1e25fba23d8d9f2ed4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2467956
Auto-Submit: Marc Treib <treib@chromium.org>
Reviewed-by: Maksim Moskvitin <mmoskvitin@google.com>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816578}