Merge "Adapt to libprocessgroup API changes for polling on cgroup.events" into main am: 50ebacbc

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2812833



Change-Id: I4d665aa0a08b304d5064828082e85745c41f5ae1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>