GitLab

Adds functions that facilitate setting the CPU affinity of a given
thread or process to all little cores on the system.

We intend to use this API to run a power experiment.

Bug: 1111789
Change-Id: I6c3d32c2338e9f00464e8b6a8c96af93658a3ae2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335176
Commit-Queue: Eric Seckler <eseckler@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#794998}