Merge "Only skip stacks behind home when not in multi-window mode."

    int taskForTapOutside(int x, int y) {

        for (int stackNdx = mTaskStackContainers.getChildCount() - 1; stackNdx >= 0; --stackNdx) {

            final TaskStack stack = mTaskStackContainers.getChildAt(stackNdx);

            if (stack.isActivityTypeHome()) {

            if (stack.isActivityTypeHome() && !stack.inMultiWindowMode()) {

                // We skip not only home stack, but also everything behind home because user can't

                // see them.

                // see them when home stack is isn't in multi-window mode.

                break;

            }

            final int taskId = stack.taskIdFromPoint(x, y);