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 MAX_IMAGE_SIZE_TO_STORE = 8000000;
          if (imageData?.data?.length > MAX_IMAGE_SIZE_TO_STORE) {
            pageProxy.cleanupAfterRender = true;
          }
          break;
        default:
          throw new Error(`Got unknown object type ${type}`);
      }
      return undefined;
    });
    messageHandler.on("DocProgress", data => {
      if (this.destroyed) {
        return; 
      }
      if (loadingTask.onProgress) {
        loadingTask.onProgress({
          loaded: data.loaded,
          total: data.total,
        });
      }
    });
    messageHandler.on(
      "UnsupportedFeature",
      this._onUnsupportedFeature.bind(this)
    );
    messageHandler.on("FetchBuiltInCMap", (data, sink) => {
      if (this.destroyed) {
        sink.error(new Error("Worker was destroyed"));
        return;