Merge "Rename removeAllProcessGroups() into removeAllEmptyProcessGroups()" into main am: e2ae20348f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2835732

Change-Id: I129756e3aee6d0e0cca3bad96bdef8cfe496a586
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>