Mark create/update/clear callbacks of notification API as optional

chrome/renderer/resources/extensions/notifications_custom_bindings.js

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Custom bindings for the notifications API.
 //
 var binding = require('binding').Binding.create('notifications');
 
 var sendRequest = require('sendRequest').sendRequest;
+var exceptionHandler = require('uncaught_exception_handler');
 var imageUtil = require('imageUtil');
 var lastError = require('lastError');
 var notificationsPrivate = requireNative('notifications_private');
 
 function imageDataSetter(context, key) {
   var f = function(val) {
     this[key] = val;
   };
   return $Function.bind(f, context);
 }
@@ skipping 84 matching lines @@
       }
       callback(true);
     }
   });
 }
 
 function genHandle(name, failure_function) {
   return function(id, input_notification_details, callback) {
     // TODO(dewittj): Remove this hack. This is used as a way to deep
     // copy a complex JSON object.
-    var notification_details = JSON.parse(
-        JSON.stringify(input_notification_details));
+    var notification_details = $JSON.parse(
+        $JSON.stringify(input_notification_details));
     var that = this;
+    var stack = exceptionHandler.getExtensionStackTrace();
     replaceNotificationOptionURLs(notification_details, function(success) {
       if (success) {
         sendRequest(that.name,
             [id, notification_details, callback],
-            that.definition.parameters);
+            that.definition.parameters, {stack: stack});
         return;
       }
       lastError.run(name,
                     'Unable to download all specified images.',
-                    null,
-                    failure_function, [callback, id])
+                    stack,
+                    failure_function, [callback || function() {}, id]);
     });
   };
 }
 
 var handleCreate = genHandle('notifications.create',
                              function(callback, id) { callback(id); });
 var handleUpdate = genHandle('notifications.update',
                              function(callback, id) { callback(false); });
 
 var notificationsCustomHook = function(bindingsAPI, extensionId) {
   var apiFunctions = bindingsAPI.apiFunctions;
   apiFunctions.setHandleRequest('create', handleCreate);
   apiFunctions.setHandleRequest('update', handleUpdate);
 };
 
 binding.registerCustomHook(notificationsCustomHook);
 
 exports.binding = binding.generate();