code: function chromeStorageSet(data, callback) {
    window.chrome.storage.sync.set(data, function() {
      callback(window.chrome.runtime.lastError);
    });
  }
docs: A function that is called when save data has finished being stored.
  @callback saveDataSetFinished
  @param {error} err If defined, err is the error that occurred when saving the data.
   
  Store data for later.
  @alias Splat.saveData.set
  @param {object} data An object containing key-value pairs of data to save.
  @param {saveDataSetFinished} callback A callback that is called when the data has finished saving.