GitLab

Add proto for power manager to provide thermal
hinting to Chrome.

Bug: 1081959
Test: See ThermalEvent in chrome://device-log
chromeos_unittest --gtest_filter=PowerManagerClientTest.ChangeThermalState

Change-Id: Ie7435852da01a5acf3580b5bb569ba117113f658
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2300983
Commit-Queue: Puthikorn Voravootivat <puthik@chromium.org>
Auto-Submit: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802880}