OWNERS update for tools/(memory|valgrind)

1. Have //tools/valgrind/OWNERS delegate to //tools/memory/OWNERS. We
don't really used valgrind on Chromium anymore anyway. Sanitizer stuff
lives in //tools/memory these days.

2. Add Vitaly Buka to OWNERS. He has committed to Chromium more recently
than glider@ (May 2020 vs. 2018).

3. Remove bruening@. Derek has moved on to other projects, and Derek has
not committed to Chromium since 2016.

R=thestig@chromium.org

Change-Id: I60caee6ab7163b05a50b50938c4bb2ba349a1452
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2450271
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Reid Kleckner <rnk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813845}
GitOrigin-RevId: 01db92d5afee61c4da6a4e2f52799d312cbe84fe
1 file changed
tree: dd8e69c1fe50c5174fc580534759bff5d341e73f
  1. asan/
  2. OWNERS
  3. README