Merge "Update Window Extensions library APIs" into tm-qpr-dev am: 0cb6a60e59

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20478645

Change-Id: I6eedcf9b59faabd6c83bfd1ee416d802c587e064
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>