Skip recents preloading when there is no task to animate to.

    void preloadRecentsInternal() {

        // Preload only the raw task list into a new load plan (which will be consumed by the

        // RecentsActivity)

        // RecentsActivity) only if there is a task to animate to.

        ActivityManager.RunningTaskInfo topTask = mSystemServicesProxy.getTopMostTask();

        MutableBoolean topTaskHome = new MutableBoolean(true);

        RecentsTaskLoader loader = RecentsTaskLoader.getInstance();

            sInstanceLoadPlan.preloadRawTasks(topTaskHome.value);

            loader.preloadTasks(sInstanceLoadPlan, topTaskHome.value);

            TaskStack top = sInstanceLoadPlan.getAllTaskStacks().get(0);

            if (top.getTaskCount() > 0) {

                preCacheThumbnailTransitionBitmapAsync(topTask, top, mDummyStackView,

                        topTaskHome.value);

            }

        }

    }

    @Override

    public void cancelPreloadingRecents() {