1 files changed, 27 insertions, 0 deletions
diff --git a/widget/headless/HeadlessScreenHelper.h b/widget/headless/HeadlessScreenHelper.h
new file mode 100644
index 0000000000..f86677af52
--- /dev/null
+++ b/widget/headless/HeadlessScreenHelper.h
@@ -0,0 +1,27 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_widget_HeadlessScreenHelper_h
+#define mozilla_widget_HeadlessScreenHelper_h
+
+#include "mozilla/widget/ScreenManager.h"
+
+namespace mozilla {
+namespace widget {
+
+class HeadlessScreenHelper final : public ScreenManager::Helper {
+ public:
+  HeadlessScreenHelper();
+  ~HeadlessScreenHelper() override = default;
+
+ private:
+  static LayoutDeviceIntRect GetScreenRect();
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif  // mozilla_widget_HeadlessScreenHelper_h