code: function() {
              Ext.data.flash.BinaryXhr.flashPluginActive = true;
              Ext.data.flash.BinaryXhr.flashPlugin = document.getElementById("ext-flash-polyfill");
              Ext.globalEvents.fireEvent("flashready"); // let all pending connections know
          }
docs: Called by the flash plugin once it's installed and open for business.
  @private