Backed out 1 changesets (bug 1202902) for causing merge conflicts to mozilla-central

Backed out changeset cfc1820361f5 (bug 1202902)

devtools/client/shared/frame-script-utils.js

@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 "use strict";
-var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
 const {require, loader} = Cu.import("resource://gre/modules/devtools/shared/Loader.jsm", {});
 const promise = require("promise");
 loader.lazyImporter(this, "Task", "resource://gre/modules/Task.jsm", "Task");