1. The number picker no longer shows up and down arrows, it
has only three touch targets which are the currently selected number
in the middle with a lesser one above and greater below, now what
you touch is what you get, flingability and long press are still
supported.
2. Removed the restriction for a View with an AccessibilityNodeProvider
to not have any concrete children. If the View has a provider, then
this provider is responsible for creating the AccessibilityNodeInfos
for all its descendants, concrete and virtual. The number picker is
a good example for such a case - it has a concrete input view and
two virtual buttons as its children. This is a safe change since
this behavior has not been released.
3. This patch also fixes bug where the number picker is stretched too
much in the Theme theme.
bug:6177794
bug:5728294
Change-Id: Id8c0b3549174b9599f971d6e3086ca427cfbaa39
912ab8506a