Fix live region updates.
Fix live region updates.

There is a sequence of update requests that put the logic
for sending live region events in a bad state where no events
are being sent anymore.

bug:15146442

Change-Id: Id53756ddfcc835f063bf9790e53c246296f9dc6e

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base