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)

value: false,
    kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
  },
  ignoreDestinationZoom: {
    
    value: false,
    kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
  },
  imageResourcesPath: {
    
    value: "./images/",
    kind: OptionKind.VIEWER,
  },
  /**
   * The `locale` is, conditionally, defined below.
   */
  maxCanvasPixels: {
    
    value: 16777216,
    compatibility: viewerCompatibilityParams.maxCanvasPixels,
    kind: OptionKind.VIEWER,
  },
  pdfBugEnabled: {
    
    value: typeof PDFJSDev === "undefined" || !PDFJSDev.test("PRODUCTION"),
    kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
  },
  printResolution: {
    
    value: 150,