Extension SW - add test for ServiceWorkerRegistration.sync.

content/public/test/background_sync_test_util.h

Index: content/public/test/background_sync_test_util.h
diff --git a/content/public/test/background_sync_test_util.h b/content/public/test/background_sync_test_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..0be7f438b5196ef83f171db43ce0f12008553260
--- /dev/null
+++ b/content/public/test/background_sync_test_util.h
@@ -0,0 +1,30 @@
+// Copyright 2015 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.
+
+#ifndef CONTENT_PUBLIC_TEST_BACKGROUND_SYNC_TEST_UTILS_H_
+#define CONTENT_PUBLIC_TEST_BACKGROUND_SYNC_TEST_UTILS_H_
+
+namespace content {
+
+class WebContents;
+
+// Utility class for background sync tests.
+class BackgroundSyncTestUtil {

[Devlin, 2015/11/16 18:12:41]

nit: I prefer namespaces for collections of static methods (so this would be
namespace background_sync_test_util), but whatever's more common in content is
fine.

[lazyboy, 2015/11/16 19:30:16]

Good point.
Done.

Should this namespace be nested inside content namespace though?

[Devlin, 2015/11/17 19:21:16]

I'll leave that up to a content/ OWNER. :)  (FWIW, my inclination is "yes")

+ public:
+  // Enables or disables notifications coming from the NetworkChangeNotifier.
+  // (For preventing flakes in tests)
+  static void SetIgnoreNetworkChangeNotifier(bool ignore);
+
+  // Puts background sync manager into online or offline mode for tests.
+  //
+  // This eventually (asynchronously) runs on the IO thread. However you can
+  // start performing background sync operation without waiting for the IO
+  // thread task to complete, since those background sync operations also run
+  // on the IO thread.
+  static void SetOnline(WebContents* web_contents, bool online);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_TEST_BACKGROUND_SYNC_TEST_UTILS_H_