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.pdfScriptingManager.dispatchDidPrint();
    if (this.printService) {
      this.printService.destroy();
      this.printService = null;
      if (this.pdfDocument) {
        this.pdfDocument.annotationStorage.resetModified();
      }
    }
    this.forceRendering();
  },
  rotatePages(delta) {
    this.pdfViewer.pagesRotation += delta;
    
    
  },
  requestPresentationMode() {
    if (!this.pdfPresentationMode) {
      return;
    }
    this.pdfPresentationMode.request();
  },
  triggerPrinting() {