d39583af0e
following ag/10570572, dismiss PiP is driven by SysUI as following - SysUI issues WindowContainerTransaction and set the child windowing mode at the beginning - SysUI continues the animation - SysUI issues WindowContainerTransaction and set the final windowing mode at the end This solves also the black background issue while exiting from PiP to fullscreen mode. Known issues - app does not receive fullscreen configuration when transitioning from PiP to fullscreen mode - saving of the reentry bounds should be originated from SysUI rather than WM going forward Bug: 149947030 Bug: 151866274 Test: atest PinnedStackTests PipAnimationControllerTest Change-Id: I7ed0d8b47dcc26653ebe2f3c08acab9e8b835db4