The problem is that we were calling done() on the EntityHeaderController
and passing false for whether to rebind the action buttons, which means
we were getting the default behavior including a visible gear
icon. Passing true to request rebinding causes that icon to be hidden.
Bug: 63405635
Test: make RunSettingsRoboTests
Change-Id: I031f4a2d176ff3be025cc2675d7026a679936b03
2efec86bae