1 files changed, 36 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/gtest/APZTestAccess.h b/gfx/layers/apz/test/gtest/APZTestAccess.h
new file mode 100644
index 0000000000..a56fb10a1a
--- /dev/null
+++ b/gfx/layers/apz/test/gtest/APZTestAccess.h
@@ -0,0 +1,36 @@
+/* -*- 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_layers_APZTestAccess_h
+#define mozilla_layers_APZTestAccess_h
+
+#include <cstddef>  // for size_t
+#include <cstdint>  // for int32_t
+
+namespace mozilla {
+namespace layers {
+
+struct ScrollMetadata;
+class WebRenderLayerScrollData;
+class WebRenderScrollData;
+
+// The only purpose of this class is to serve as a single type that can be
+// the target of a "friend class" declaration in APZ classes that want to
+// give APZ test code access to their private members.
+// APZ test code can then access those members via this class.
+class APZTestAccess {
+ public:
+  static void InitializeForTest(WebRenderLayerScrollData& aLayer,
+                                int32_t aDescendantCount);
+  static ScrollMetadata& GetScrollMetadataMut(WebRenderLayerScrollData& aLayer,
+                                              WebRenderScrollData& aOwner,
+                                              size_t aIndex);
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif