I was wondering if WebGL is considered stable enough to be enabled by default. It makes some PDFs render much faster and it has been off by default for a while now, so we have had quite some time to test it.

If we decide to enable WebGL by default, we should not forget to update https://github.com/mozilla/pdf.js/blob/master/extensions/chromium/preferences_schema.json#L39 as well.

/cc @yurydelendik 
/cc @Snuffleupagus (because IIRC you were testing WebGL too)

return this._transport.getOpenAction();
  }
  /**
   * @returns {Promise<any>} A promise that is resolved with a lookup table
   *   for mapping named attachments to their content.
   */
  getAttachments() {
    return this._transport.getAttachments();
  }
  /**
   * @returns {Promise<Array<string> | null>} A promise that is resolved with
   *   an {Array} of all the JavaScript strings in the name tree, or `null`
   *   if no JavaScript exists.
   */
  getJavaScript() {
    return this._transport.getJavaScript();
  }
  /**
   * @returns {Promise<Object | null>} A promise that is resolved with
   *   an {Object} with the JavaScript actions:
   *     - from the name tree (like getJavaScript);
   *     - from A or AA entries in the catalog dictionary.
   *   , or `null` if no JavaScript exists.
   */
  getJSActions() {