Remove the next button (so the user has to touch the sensor to
proceed), and add a skip button.
Test: cd tests/robotests && mma
Bug: 62839648
Change-Id: I555948ac2f3235e08b91f0957aa8e0ce24535c08
Some illustration view can manage their own start-stop lifecycle and
doesn't need to be handled by the activity.
Make mAnimation null if the animation is not an instance of
FingerprintFindSensorAnimation.
Test: cd tests/robotests && mma
Bug: 38463695
Change-Id: I41989e5cb0639407f58d9c8edda0eef93adbf2e8