Method removeAtIndex

src/service/task-queue.js:137–145

* Removes the task and returns "true" if dequeueing is successful. Otherwise * returns "false", e.g. when this task is not currently enqueued. * @param {!TaskDef} task * @param {number} index of the task to remove. * @return {boolean}

(task, index)

   * @return {boolean}
   */
  removeAtIndex(task, index) {
    const existing = this.taskIdMap_[task.id];
    if (!existing || this.tasks_[index] != existing) {
      return false;
    }
    this.tasks_.splice(index, 1);
    delete this.taskIdMap_[task.id];
    return true;
  }

  /**
   * Removes tasks in queue that pass the callback test.