We fire notifications that the a view subtree changed for accessibility.
In some cases the notifications were fired if accessibility is not
enabled. This is now fixed. Also the runnable for making the recurring
subtree change was not dequeued if it was pending but we received a
request which we decided to run immediately.
bug:9337912
Change-Id: I27401b3d11f81c653e8761a704ee530263b08c3a
00dbe81fea