1 files changed, 34 insertions, 0 deletions
diff --git a/chromium/ui/compositor/layer_tree_owner.cc b/chromium/ui/compositor/layer_tree_owner.cc
new file mode 100644
index 00000000000..ebb0a7fc7f4
--- /dev/null
+++ b/chromium/ui/compositor/layer_tree_owner.cc
@@ -0,0 +1,34 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/compositor/layer_tree_owner.h"
+
+#include "ui/compositor/layer.h"
+
+namespace ui {
+
+namespace {
+
+// Deletes |layer| and all its descendants.
+void DeepDeleteLayers(Layer* layer) {
+  std::vector<Layer*> children = layer->children();
+  for (std::vector<Layer*>::const_iterator it = children.begin();
+       it != children.end();
+       ++it) {
+    Layer* child = *it;
+    DeepDeleteLayers(child);
+  }
+  delete layer;
+}
+
+}  // namespace
+
+LayerTreeOwner::LayerTreeOwner(Layer* root) : root_(root) {}
+
+LayerTreeOwner::~LayerTreeOwner() {
+  if (root_)
+    DeepDeleteLayers(root_);
+}
+
+}  // namespace ui