1 files changed, 26 insertions, 0 deletions
diff --git a/layout/base/LayerState.h b/layout/base/LayerState.h
new file mode 100644
index 000000000..643e1e974
--- /dev/null
+++ b/layout/base/LayerState.h
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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 LAYERSTATE_H_
+#define LAYERSTATE_H_
+
+namespace mozilla {
+
+enum LayerState {
+  LAYER_NONE,
+  LAYER_INACTIVE,
+  LAYER_ACTIVE,
+  // Force an active layer even if it causes incorrect rendering, e.g.
+  // when the layer has rounded rect clips.
+  LAYER_ACTIVE_FORCE,
+  // Special layer that is metadata only.
+  LAYER_ACTIVE_EMPTY,
+  // Inactive style layer for rendering SVG effects.
+  LAYER_SVG_EFFECTS
+};
+
+} // namespace mozilla
+
+#endif