Bug: 63908092
Test: Manual
If the animation is running on the render thread, post a message (in
JNI) to call the listener.
Use a weak reference in the native listener so that it does not create
a cycle.
Don't add a listener if it's already in the list. Remove the native
listener when the Java listeners are all removed.
Call onAnimationEnd when the animation is stopped manually.
Change-Id: I5dc070089fb1cf399ac3316292592f614f2738f0
beaf5d919f