Fix crash in ViewPropertyAnimator for unparented view.
Fix crash in ViewPropertyAnimator for unparented view.

Mechanism for removing possible earlier animations should
call removeCallbacks on the view, not on the (possibly null)
handler of the view.

Change-Id: I76c6f0bea5e009be9197a6e49e9360ed9ef1a9cb

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