[automerger skipped] DO NOT MERGE: Revert "Revert "Add libprocessgroup dependency"" am: d6a9948c92 -s ours am: e7090e1b65 -s ours
am: d97940c32c -s ours
am skip reason: subject contains skip directive

Change-Id: Id36765c33d725cb0cd21381f927410b1d352bcc8