Merge "Add unit test for EventReceiver class in CaptionWindowDecorViewModel" into tm-qpr-dev am: 544e44f249

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20693841

Change-Id: I6986107feaeedd3e912ad4b7bc7b2bc641155ea7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>