Perform layout and invalidation after bringChildToFront()

Previously, calls to ViewGroup.bringChildToFront() or View.bringToFront()
would need to be followed by calls to requestLayout() and invalidate()
to force the container to redraw with the new child ordering. This
change calls requestLayout() and invalidate() automatically.

Issue #8667065 bringtoTop does not work

Change-Id: Id37ce7a64dead82119e49f7a1b28385cf0d1f20d