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)

})
        .catch(() => {
          
          
          this.setInitialView();
        })
        .then(function () {
          
          
          
          
          pdfViewer.update();
        });
    });
    pagesPromise.then(() => {
      this._unblockDocumentLoadEvent();
      this._initializeAutoPrint(pdfDocument, openActionPromise);
    });
    onePageRendered.then(() => {
      pdfDocument.getOutline().then(outline => {
        if (pdfDocument !== this.pdfDocument) {
          return; 
        }
        this.pdfOutlineViewer.render({ outline, pdfDocument });
      });
      pdfDocument.getAttachments().then(attachments => {
        if (pdfDocument !== this.pdfDocument) {
          return; 
        }
        this.pdfAttachmentViewer.render({ attachments });