Merge "Merge "Check that activity is not in PIP mode already" into rvc-dev am:...

Merge "Merge "Check that activity is not in PIP mode already" into rvc-dev am: 3c987ead am: 8ba4ff40 am: f738ef33" into rvc-qpr-dev-plus-aosp am: 6c281402

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11742412

Change-Id: I5bbde081c15841acf276d8757fc0afd13caf3fd5