Bug 1423067 - SyncedTabs.jsm now exports the loginFailed getter fixing an issue with the sidebar. r=eoger

MozReview-Commit-ID: AVjfXH1E9uw

--HG--
extra : rebase_source : 8ee64138f5604b12af1f4ffa0cabb73ab6ad5465

services/sync/modules/SyncedTabs.jsm

@@ -247,6 +247,11 @@ this.SyncedTabs = {
     return this._internal.hasSyncedThisSession;
   },
 
+  // Returns true if Sync is in a "need to reauthenticate" state.
+  get loginFailed() {
+    return this._internal.loginFailed;
+  },
+
   // Return a promise that resolves with an array of client records, each with
   // a .tabs array. Note that part of the contract for this module is that the
   // returned objects are not shared between invocations, so callers are free