Bug 1154789 - Create shared React component for searchbox: tell eslint that search-box.js has windows as global. r=eslint-fix

devtools/client/shared/components/search-box.js

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+/* global window */
+
 "use strict";
 
 const { DOM: dom, createClass, PropTypes } = require("devtools/client/shared/vendor/react");