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)

pdfPage,
      annotationStorage:
        annotationStorage || this.pdfDocument?.annotationStorage,
      imageResourcesPath,
      renderInteractiveForms,
      linkService: this.linkService,
      downloadManager: this.downloadManager,
      l10n,
      enableScripting: enableScripting ?? this.enableScripting,
      hasJSActionsPromise:
        hasJSActionsPromise || this.pdfDocument?.hasJSActions(),
      mouseState: mouseState || this._scriptingManager?.mouseState,
    });
  }
  /**
   * @param {HTMLDivElement} pageDiv
   * @param {PDFPage} pdfPage
   * @returns {XfaLayerBuilder}
   */
  createXfaLayerBuilder(pageDiv, pdfPage) {
    return new XfaLayerBuilder({
      pageDiv,
      pdfPage,
    });
  }
  /**
   * @param {PDFPage} pdfPage
   * @returns {StructTreeLayerBuilder}
   */
  createStructTreeLayerBuilder(pdfPage) {