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We've previously had approvals so that I could LGTM metrics for the
chrome knowledge team. We'd like to continue that system under the
new split of histograms files if possible, so this CL adds me as
owner to the directories we have metrics in. Specifically, those are:

 - apps/ and ash/ for launcher ml
 - auto/ for auto screen brightness
 - local/ for local search service
 - others/ for the ml service
 - power/ for power ml

Change-Id: I5a7232c363374fb225e0aabd41a9891fe07e44c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466017
Commit-Queue: Tony Yeoman <tby@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#817252}