Revert "Revert "Support immersive mode with task bar""

This reverts commit e38e9d8793ccfd432131cbf7b4158591ae797129.

Reason for revert: Rolling forward with a proper fix (ag/15746910)

Fixes: 197991600
Change-Id: If9b8d2258832dbcbc63276bbfcace2664a595c68
1 file changed