Merge "Make Pip usage of FrameCallbackScheduler an actual class"

    private ThreadLocal<AnimationHandler> mSfAnimationHandlerThreadLocal =

            ThreadLocal.withInitial(() -> {

                FrameCallbackScheduler scheduler = runnable ->

                final Looper initialLooper = Looper.myLooper();

                final FrameCallbackScheduler scheduler = new FrameCallbackScheduler() {

                    @Override

                    public void postFrameCallback(@androidx.annotation.NonNull Runnable runnable) {

                        Choreographer.getSfInstance().postFrameCallback(t -> runnable.run());

                    }

                    @Override

                    public boolean isCurrentThread() {

                        return Looper.myLooper() == initialLooper;

                    }

                };

                AnimationHandler handler = new AnimationHandler(scheduler);

                return handler;

            });