Bug 813766: Set EXPORTED_SYMBOLS on this instead of the global. r=gps

services/sync/modules/constants.js

@@ -4,7 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 // Process each item in the "constants hash" to add to "global" and give a name
-let EXPORTED_SYMBOLS = [((this[key] = val), key) for ([key, val] in Iterator({
+this.EXPORTED_SYMBOLS = [((this[key] = val), key) for ([key, val] in Iterator({
 
 WEAVE_CHANNEL:                         "@weave_channel@",
 WEAVE_VERSION:                         "@weave_version@",