Merge "Fix untrusted embedding visibility in multi windowing mode" into tm-dev am: 721634a9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17696010



Change-Id: Id7f1412adb8789a839703421c4c42e052664644d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>