B2G/gecko/browser/base/content/browser-social.js
// the sidebar in these windows.
the sidebar in these windows.
the sidebar in these windows .
get chromeless() {
    let docElem = document.documentElement;
    return docElem.getAttribute('disablechrome') ||
           docElem.getAttribute('chromehidden').contains("toolbar");
  }
get chromeless ( ) { let docElem = document . documentElement ; return docElem . getAttribute ( 'disablechrome' ) || docElem . getAttribute ( 'chromehidden' ) . contains ( "toolbar" ) ; }
the sidebar in these windows.
the sidebar in these windows .