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)

this._listeners.length = 0;
  }
}
/**
 * @typedef {Object} PDFWorkerParameters
 * @property {string} [name] - The name of the worker.
 * @property {Object} [port] - The `workerPort` object.
 * @property {number} [verbosity] - Controls the logging level; the
 *   constants from {@link VerbosityLevel} should be used.
 */
const PDFWorker = (function PDFWorkerClosure() {
  const pdfWorkerPorts = new WeakMap();
  let isWorkerDisabled = false;
  let fallbackWorkerSrc;
  let nextFakeWorkerId = 0;
  let fakeWorkerCapability;
  if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("GENERIC")) {
    
    if (isNodeJS && typeof __non_webpack_require__ === "function") {
      
      isWorkerDisabled = true;
      if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("LIB")) {
        fallbackWorkerSrc = "../pdf.worker.js";
      } else {
        fallbackWorkerSrc = "./pdf.worker.js";
      }
    } else if (typeof document === "object" && "currentScript" in document) {
      const pdfjsFilePath = document.currentScript?.src;
      if (pdfjsFilePath) {