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This CL fixes a bug in test_suites.pyl and introduces sharding to memory.leak_detection benchmark.
Original CL: https://chromium-review.googlesource.com/c/chromium/src/+/1180788
TBR=nednguyen@chromium.org,dpranke@chromium.org

Cq-Include-Trybots: master.tryserver.chromium.perf:obbs_fyi
Change-Id: Ie1a3be0b3b47a9feb57d77a779a6df8cf8257a3c
Reviewed-on: https://chromium-review.googlesource.com/1182714Reviewed-by: Yuzu Saijo <yuzus@chromium.org>
Commit-Queue: Yuzu Saijo <yuzus@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584644}