Create profile_sync_test_util in components

components/browser_sync/browser/profile_sync_test_util.cc

Index: components/browser_sync/browser/profile_sync_test_util.cc
diff --git a/components/browser_sync/browser/profile_sync_test_util.cc b/components/browser_sync/browser/profile_sync_test_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b941c32fa3788ea2fd91c6d37b8f95141abbe231
--- /dev/null
+++ b/components/browser_sync/browser/profile_sync_test_util.cc
@@ -0,0 +1,17 @@
+// Copyright 2016 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.
+
+#include "components/browser_sync/browser/profile_sync_test_util.h"
+
+namespace browser_sync {
+
+void EmptyNetworkTimeUpdate(const base::Time&,
+                            const base::TimeDelta&,
+                            const base::TimeDelta&) {}
+
+SyncServiceObserverMock::SyncServiceObserverMock() {}
+
+SyncServiceObserverMock::~SyncServiceObserverMock() {}
+
+}  // namespace browser_sync