Merge "libprocessgroup: fix boot time performance regression" am: e89ee18b...

Merge "libprocessgroup: fix boot time performance regression" am: e89ee18b am: 12f447e6 am: ab4821d3 am: 00559674

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2467504



Change-Id: I33471963d0d8223fd85279f34231efb63bf06cb1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>