return NS_OK;
nsWebShell::SetRendering(PRBool aRender){  if(eCharsetReloadRequested != mCharsetReloadState)   {    if (mContentViewer) {       mContentViewer->SetEnableRendering(aRender);       return NS_OK;    }  }  //return failer if this request is not accepted due to mCharsetReloadState  return NS_ERROR_WEBSHELL_REQUEST_REJECTED;}