Bug 1233497 - Temporarily allow unsafe CPOWs in Promise-backend.js and Task.jsm. r=billm

--HG--
extra : commitid : Jzchcq5SSGv
extra : rebase_source : a8f2cbfe5a77fc5d80eb04dd806841355479a953

toolkit/modules/Promise-backend.js

@@ -56,6 +56,10 @@ if (Cu) {
   XPCOMUtils.defineLazyServiceGetter(this, "FinalizationWitnessService",
                                      "@mozilla.org/toolkit/finalizationwitness;1",
                                      "nsIFinalizationWitnessService");
+
+  // For now, we're worried about add-ons using Promises with CPOWs, so we'll
+  // permit them in this scope, but this support will go away soon.
+  Cu.permitCPOWsInScope(this);
 }
 
 const STATUS_PENDING = 0;

toolkit/modules/Task.jsm

@@ -91,6 +91,10 @@ const Ci = Components.interfaces;
 const Cu = Components.utils;
 const Cr = Components.results;
 
+// For now, we're worried about add-ons using Tasks with CPOWs, so we'll
+// permit them in this scope, but this support will go away soon.
+Cu.permitCPOWsInScope(this);
+
 Cu.import("resource://gre/modules/Promise.jsm");
 
 // The following error types are considered programmer errors, which should be