Fix bug 5199326 - ListView's fast scroller is out of sync with contents
Fix bug 5199326 - ListView's fast scroller is out of sync with contents

Also fix a bug where the fast scroll track was not being properly
invalidated while animating out.

Change-Id: Ie90568a993699d5d061985985e3d93165d1d2219

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