- Add a new flag indicating that the display should show
system decorations, such as status bar, nav bar, home and IME.
- Automatically launches home activity on secondary display
if the display support system decorations and home
activity has multiple instances supports.
- Remove ActivityStackSupervisor#mHomeStack and move several
home stack related methods to ActivityDisplay.
Bug: 111363427
Test: atest ActivityManagerMultiDisplayTests
atest com.android.server.am
Manual test on virtual display and chromecast
Change-Id: I48fe245ad12965a19a6768f5dbb4e974ce94b01a
bd48dca2d0