Fix FastScroller overlay position bug after setFastScrollEnabled(false)-->setFastScrollEnabled(true) the overlay shows up at the top-left instead of center
Fix FastScroller overlay position bug
after setFastScrollEnabled(false)-->setFastScrollEnabled(true)
the overlay shows up at the top-left instead of center

Change-Id: Idd5d4640398def8391f99962bd1838a3bde98157

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