Add a Create method to DesktopNotificationHandler and stubs for the notification objects.

chrome/browser/desktop_notification_handler_stub.cc

Index: chrome/browser/desktop_notification_handler_stub.cc
diff --git a/chrome/browser/desktop_notification_handler_stub.cc b/chrome/browser/desktop_notification_handler_stub.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9966b453f176cbfa23f45eec19774fe9c5211db1
--- /dev/null
+++ b/chrome/browser/desktop_notification_handler_stub.cc
@@ -0,0 +1,12 @@
+// Copyright (c) 2011 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 "chrome/browser/desktop_notification_handler.h"
+
+// static
+DesktopNotificationHandler*
+DesktopNotificationHandler::Create(RenderViewHost* render_view_host) {
+  return NULL;
+}
+