Merge \"Do remove starting windows for activities in an invisible stack\" into nyc-mr1-dev

        // We don't want to clear starting window for activities that aren't behind fullscreen

        // We don't want to clear starting window for activities that aren't behind fullscreen

        // activities as we need to display their starting window until they are done initializing.

        // activities as we need to display their starting window until they are done initializing.

        boolean behindFullscreenActivity = false;

        boolean behindFullscreenActivity = false;

        if (getStackVisibilityLocked(null) == STACK_INVISIBLE) {

            // The stack is not visible, so no activity in it should be displaying a starting

            // window. Mark all activities below top and behind fullscreen.

            aboveTop = false;

            behindFullscreenActivity = true;

        }

        for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {

        for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {

            final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;

            final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities;

            for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {

            for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {