Merge "Put new Activity at frontOfTask"

        r.putInHistory();

        r.frontOfTask = newTask;

        if (!r.frontOfTask) {

            // It is possible that the current frontOfTask activity is finishing. Check for that.

            ArrayList<ActivityRecord> activities = task.mActivities;

            for (int activityNdx = 0; activityNdx < activities.size(); ++activityNdx) {

                final ActivityRecord activity = activities.get(activityNdx);

                if (activity.finishing) {

                    continue;

                }

                if (activity == r) {

                    // All activities before r are finishing.

                    r.frontOfTask = true;

                }

                break;

            }

        }

        if (!isHomeStack() || numActivities() > 0) {

            // We want to show the starting preview window if we are

            // switching to a new task, or the next activity's process is