AccessibilityNodeInfo refresh returns a stale state. - DO NOT MERGE

AccessibilityNodeInfo refresh was getting the latest cached
state but this is not good enough as an accessibility service
can execute an action on the node and then refresh it to get
the new state.

bug:16954787

Change-Id: I004b4987b8dc423a2ab7031a4fbfe64365ddd7fe
(cherry picked from commit 5738fec0)