Merge "Add HideOverlayWindowTest to cts-meerkat." am: 5f65548bb7 am: 2dcb397d6f am: 5e6a334f58

Original change: https://android-review.googlesource.com/c/platform/cts/+/1549391

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib9ae0dce0e3f1e776190e6f8918ff882baf610c7