Merge "Use ArraySet#add() instead of ArraySet#append()" am: a536692e6a

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1991567f130f3afee6c6bcb78a9254b45e14f6e4
tree: cf7c27d8d52ebcf46740c21eeca6e6939c034b5a
  1. framework/
  2. service/
  3. OWNERS