1. Now if the widget is not interacted with shows a smaller selector
wheel with the increment and decrement arrows at the top and bottom
respectively.
2. Tapping an arrow button now animates the widget to the new value. i.e.
rotates the selector whell to the next value.
3. Fixed a bug that double tapping on the input shows the IME but then
after pressing an arrow button the IME is not hidden.
4. Fixed a bug that was exposed via late changes in the framework or the
graphics and was manifested of the selector wheel not having fading
edges.
bug:5251980
bug:5383502
Change-Id: I4a089dc69b07a3b28a514017cddf786cb9f4af16
b80a3fcad1