Issue 1772 - [JSHydra] Convert const to var for Chrome

autotest/test_abprewrite_module.js.expected

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 //
 // This file has been generated automatically, relevant repositories:
 // * https://hg.adblockplus.org/jshydra/
 //
 
 require.scopes["abprewrite_source"] = (function()
 {
   var exports = {};
-  const Cl = Components.unknown;
+  var Cl = Components.unknown;
   var Utils = require("utils").Utils;
   var _tempVar0 = require("filterClasses");
   var Filter = _tempVar0.Filter;
   var BlockingFilter = _tempVar0.BlockingFilter;
   var foo;
   var bar = 2;
   var bas;
+  var FOO = "FOO";
   var _tempVar1 = foo();
   var a = _tempVar1[0];
   var b = _tempVar1[1];
   var _tempVar2 = [1, 2];
   a = _tempVar2[0];
   b = _tempVar2[1];
   var y = foo().x;
   var _tempVar3 = foo();
   var v1 = _tempVar3.k1;
   var v2 = _tempVar3.k2;
@@ skipping 104 matching lines @@
   }.bind(this);
   x = function(a, b)
   {
     return function()
     {
       return 1;
     };
   }.bind(this);
   return exports;
 })();