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)

throw new Error("Not implemented: createL10n");
  }
  static createScripting(options) {
    throw new Error("Not implemented: createScripting");
  }
  static get supportsIntegratedFind() {
    return shadow(this, "supportsIntegratedFind", false);
  }
  static get supportsDocumentFonts() {
    return shadow(this, "supportsDocumentFonts", true);
  }
  static get supportedMouseWheelZoomModifierKeys() {
    return shadow(this, "supportedMouseWheelZoomModifierKeys", {
      ctrlKey: true,
      metaKey: true,
    });
  }
  static get isInAutomation() {
    return shadow(this, "isInAutomation", false);
  }
}
const PDFViewerApplication = {
  initialBookmark: document.location.hash.substring(1),
  _initializedCapability: createPromiseCapability(),
  _fellback: false,
  appConfig: null,
  pdfDocument: null,
  pdfLoadingTask: null,
  printService: null,