Update accessibility focused virtual view bounds.
Update accessibility focused virtual view bounds.

We keep track of the accessibility focused virtual view in order to
draw the accessibility focus highlight. We were not updating this
virtual view when the view tree changes in a way that may affect
the virtial view's bounds in the screen.

bug:17211255

Change-Id: I69dd949b91ed9c8242521332081d50d75cac6921

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