Because can't save the value into setting keys for the service before version R, and in order to let tutorial dialog can get the consistent value, using alternative that each fragment with shortcut to must implement the new abstract method.
Bug: 148989018
Test: manual test
Change-Id: Iba2a7daa70eb00f0bba37317c9355531fbb77628
Move the summary for the toggled features to a footer.
Make the settings appear as a preference.
Bug: 36780887
Test: Start settings and observe the new UI looks a lot
like the mocks referenced in the bug. Also added unit
test to verify that summary text shows up.
Change-Id: I1d002b194991d0901ecb27198ba5de73bd23a5a9
