Merge "Fix missing exit animation when app is closed during starting window" into nyc-dev

            for (int i = 0; i < windowsCount; i++) {

                WindowState win = wtoken.allAppWindows.get(i);

                if (win == wtoken.startingWindow) {

                    // Starting window that's exiting will be removed when the animation

                    // finishes. Mark all relevant flags for that finishExit will proceed

                    // all the way to actually remove it.

                    if (!visible && win.isVisibleNow() && wtoken.mAppAnimator.isAnimating()) {

                        win.mAnimatingExit = true;

                        win.mRemoveOnExit = true;

                        win.mWindowRemovalAllowed = true;

                    }

                    continue;

                }