tree caf8b0d2304a5545aa1c00d2544277032eeb16a9
parent 2916fa11eea3e119b8f24bea4daa861294951813
author Doris Liu <tianliu@google.com> 1440712590 -0700
committer Doris Liu <tianliu@google.com> 1440717228 -0700

Prevents recursive call into end() or cancel()

end() and cancel() in ValueAnimator will trigger onAnimationCancel
or onAnimationEnd callback on its listeners. If additional end()
or cancel() request comes from the callback, a loop will be formed.
Therefore, we need to mark when the end is reuqested so we do not
process end() or cancel() request multiple times during one animation
run, and also effectively terminate the loop.

Bug: 23596652
Change-Id: Iefb69eb8969071b43124c09d7cccbe9ff5ba5dcc