Trigger chrome.storage.onChanged events for policy updates on the 'managed' namespace.

chrome/test/data/extensions/api_test/settings/managed_storage_events/background.js

Index: chrome/test/data/extensions/api_test/settings/managed_storage_events/background.js
diff --git a/chrome/test/data/extensions/api_test/settings/managed_storage_events/background.js b/chrome/test/data/extensions/api_test/settings/managed_storage_events/background.js
new file mode 100644
index 0000000000000000000000000000000000000000..538664cb0894680946b79b066f53aaa214d9b2b2
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/settings/managed_storage_events/background.js
@@ -0,0 +1,42 @@
+// Copyright (c) 2012 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.
+
+chrome.test.runTests([
+  function managedChangeEvents() {
+    // Verify initial values.
+    chrome.storage.managed.get(
+        chrome.test.callbackPass(function(results) {
+          chrome.test.assertEq({
+            'constant-policy': 'aaa',
+            'changes-policy': 'bbb',
+            'deleted-policy': 'ccc'
+          }, results);
+
+          // Now start listening for changes.
+          // chrome.test.listenOnce() adds and removes the listener to the
+          // given event, and only lets the test complete after receiving the
+          // event.
+          chrome.test.listenOnce(
+              chrome.storage.onChanged,
+              function(changes, namespace) {
+                chrome.test.assertEq('managed', namespace);
+                chrome.test.assertEq({
+                    'changes-policy': {
+                      'oldValue': 'bbb',
+                      'newValue': 'ddd'
+                    },
+                    'deleted-policy': {
+                      'oldValue': 'ccc'
+                    },
+                    'new-policy': {
+                      'newValue': 'eee'
+                    }
+                }, changes);
+              });
+
+          // Signal to the browser that we're listening.
+          chrome.test.sendMessage('ready');
+        }));
+  }
+]);