05c9d551d8
Currently, TaskBar expansion is allowed when an activity context is available. Since Dreams are implemented as an activity, this leads to being able to expand the TaskBar over a dream. This changelist updates the logic to not allow system gestures when dreaming. Test: manual Bug: 265755700 Change-Id: If58608c1e491da7906a2615681da0514fa49cfc8 Merged-In: If58608c1e491da7906a2615681da0514fa49cfc8