Merge "PiP: Potentially hide menu immediately after it appears." into rvc-dev am: 4757e892 am: 9a056393 am: 0e61d5a5 am: 8a00fcae

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11710013

Change-Id: I71e74c10b5aaa936c7331e6a86a687403f6f87b0