Add nikunjb to base/metrics, component/metrics and browser/metrics OWNERS file

Change-Id: I734a9acb0497e75dfffc461d5f6e73626be6edad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1545224
Commit-Queue: Nik Bhagat <nikunjb@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#654118}
1 file changed