public void add(Runnable runnable, long delayMs) {
    deltaQueue.add(tickRemaining + delayMs, runnable);
  }
Adds a task to the queue that is to be executed to after the specified delay.

@param runnable the task to execute
@param delayMs the delay before the task should be executed
imagepipeline-base-test/src/main/java/com/facebook/imagepipeline/testing/ScheduledQueue.java