B2G/gecko/browser/components/tabview/tabitems.js
// three times before TabItems will start updating thumbnails again.
three times before TabItems will start updating thumbnails again.
three times before TabItems will start updating thumbnails again .
function TabItems_resumePainting() {
    this.paintingPaused--;
    Utils.assert(this.paintingPaused > -1, "paintingPaused should not go below zero");
    if (!this.isPaintingPaused())
      this.startHeartbeat();
  }
function TabItems_resumePainting ( ) { this . paintingPaused -- ; Utils . assert ( this . paintingPaused > - 1 , "paintingPaused should not go below zero" ) ; if ( ! this . isPaintingPaused ( ) ) this . startHeartbeat ( ) ; }
three times before TabItems will start updating thumbnails again.
three times before TabItems will start updating thumbnails again .