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)

const location = evt.location,
    store = PDFViewerApplication.store;
  if (store && PDFViewerApplication.isInitialViewSet) {
    store
      .setMultiple({
        page: location.pageNumber,
        zoom: location.scale,
        scrollLeft: location.left,
        scrollTop: location.top,
        rotation: location.rotation,
      })
      .catch(function () {
        
      });
  }
  const href = PDFViewerApplication.pdfLinkService.getAnchorUrl(
    location.pdfOpenParams
  );
  PDFViewerApplication.appConfig.toolbar.viewBookmark.href = href;
  PDFViewerApplication.appConfig.secondaryToolbar.viewBookmarkButton.href = href;
  
  const currentPage = PDFViewerApplication.pdfViewer.getPageView(
     PDFViewerApplication.page - 1
  );
  const loading = currentPage?.renderingState !== RenderingStates.FINISHED;
  PDFViewerApplication.toolbar.updateLoadingIndicatorState(loading);
}
function webViewerScrollModeChanged(evt) {