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 intentState = this._intentStates.get(intent);
    if (!intentState) {
      return; 
    }
    if (this._stats) {
      this._stats.timeEnd("Page Request");
    }
    
    
    if (intentState.displayReadyCapability) {
      intentState.displayReadyCapability.resolve(transparency);
    }
  }
  /**
   * @private
   */
  _renderPageChunk(operatorListChunk, intentState) {