Merge "Merge "Drop supplementary groups for child zygotes." into rvc-dev am:...

Merge "Merge "Drop supplementary groups for child zygotes." into rvc-dev am: 1a081317 am: 81a1af64 am: 7bf5d343" into rvc-qpr-dev-plus-aosp am: 9f464939

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11691823

Change-Id: I4806e82eb872aa55dbab8c59f7dbb67aae7e1bec