Merge "Handle Home shortcut in PhoneWindowManager and back in native" into udc-dev am: 5ed761ef

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21547564



Change-Id: Iafa6b92baa38f7478b5f9de7d91235ea79ff13ec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>