tree 66c9ad0411b34e86c12f3eb5b3137d1e3e8a2afc
parent 3a5d7cca9e930c57c59bfa53d1318280ead1084e
author Tony Wickham <twickham@google.com> 1569009254 -0700
committer Tony Wickham <twickham@google.com> 1569016710 +0000

Don't crash when swiping up if there are no TaskViews

This can happen in LockTask mode, after enabling Overview. In that case,
you are locked to the current task, but are allowed to go to overview
but no tasks are shown there.

Bug: 139917483
Change-Id: I2180cc5e72c343977ea53cc02907ed8dac0f8bc6