Merge "Reapply "libprocessgroup: Remove __BEGIN_DECLS and __END_DECLS"" into main am: b0534030

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3369297



Change-Id: Ia8fa8d2b8ccf194309e318a0712c98d911aab998
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>