1 files changed, 45 insertions, 0 deletions
diff --git a/gfx/layers/ipc/ShadowLayerChild.cpp b/gfx/layers/ipc/ShadowLayerChild.cpp
new file mode 100644
index 000000000..62d260838
--- /dev/null
+++ b/gfx/layers/ipc/ShadowLayerChild.cpp
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* 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/. */
+
+#include "ShadowLayerChild.h"
+#include "Layers.h"                     // for Layer
+#include "ShadowLayers.h"               // for ShadowableLayer
+
+namespace mozilla {
+namespace layers {
+
+ShadowLayerChild::ShadowLayerChild()
+  : mLayer(nullptr)
+{ }
+
+ShadowLayerChild::~ShadowLayerChild()
+{ }
+
+void
+ShadowLayerChild::SetShadowableLayer(ShadowableLayer* aLayer)
+{
+  MOZ_ASSERT(!mLayer);
+  mLayer = aLayer;
+}
+
+void
+ShadowLayerChild::ActorDestroy(ActorDestroyReason why)
+{
+  MOZ_ASSERT(AncestorDeletion != why,
+             "shadowable layer should have been cleaned up by now");
+
+  if (AbnormalShutdown == why && mLayer) {
+    // This is last-ditch emergency shutdown.  Just have the layer
+    // forget its IPDL resources; IPDL-generated code will clean up
+    // automatically in this case.
+    mLayer->AsLayer()->Disconnect();
+    mLayer = nullptr;
+  }
+}
+
+} // namespace layers
+} // namespace mozilla