Merge "Use ArraySet#add() instead of ArraySet#append()" am: a536692e6a am: 970658bac8 am: 9691a4a867

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1615181

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic1cbcbb6f9dc83e664593b8e095a0f9b80697b83
tree: 74fc63be1fd622371afd1a5627b298d7b7e6cba9
  1. framework/
  2. service/
  3. OWNERS