1 files changed, 20 insertions, 0 deletions
diff --git a/hal/HalScreenConfiguration.h b/hal/HalScreenConfiguration.h
new file mode 100644
index 000000000..dce84fd31
--- /dev/null
+++ b/hal/HalScreenConfiguration.h
@@ -0,0 +1,20 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et ft=cpp : */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_HalScreenConfiguration_h
+#define mozilla_HalScreenConfiguration_h
+
+#include "mozilla/Observer.h"
+
+namespace mozilla {
+namespace hal {
+class ScreenConfiguration;
+typedef Observer<ScreenConfiguration> ScreenConfigurationObserver;
+} // namespace hal
+} // namespace mozilla
+
+#endif  // mozilla_HalScreenConfiguration_h
+