  * and produces data like bytes-transferred, total-bytes, states, etc...
    *
    * You can also use this element to cancel, pause, and resume a task.
    *
    *
    * `<firebase-storage>` needs some information about how to talk to Firebase.
    * Set this configuration by adding a `<firebase-app>` element anywhere in your
    * app.
    */
    Polymer({
      is: 'firebase-storage-upload-task',

      properties: {
        /**
        *  The upload task that is being tracked
        */
        task: {
