Rename StackingClient -> WindowTreeClient

ui/aura/client/window_tree_client.cc

Index: ui/aura/client/window_tree_client.cc
diff --git a/ui/aura/client/window_tree_client.cc b/ui/aura/client/window_tree_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b2ea10f6b1406f30f03fa89a61a0abba1e0a0eed
--- /dev/null
+++ b/ui/aura/client/window_tree_client.cc
@@ -0,0 +1,51 @@
+// Copyright (c) 2013 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/aura/client/window_tree_client.h"
+
+#include "ui/aura/env.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/window_property.h"
+
+DECLARE_WINDOW_PROPERTY_TYPE(aura::client::WindowTreeClient*)
+
+namespace aura {
+namespace client {
+
+DEFINE_WINDOW_PROPERTY_KEY(
+    WindowTreeClient*, kRootWindowWindowTreeClientKey, NULL);
+
+void SetWindowTreeClient(Window* window, WindowTreeClient* window_tree_client) {
+  DCHECK(window);
+
+  RootWindow* root_window = window->GetRootWindow();
+  DCHECK(root_window);
+  root_window->SetProperty(kRootWindowWindowTreeClientKey, window_tree_client);
+}
+
+WindowTreeClient* GetWindowTreeClient(Window* window) {
+  DCHECK(window);
+  RootWindow* root_window = window->GetRootWindow();
+  DCHECK(root_window);
+  WindowTreeClient* client =
+      root_window->GetProperty(kRootWindowWindowTreeClientKey);
+  DCHECK(client);
+  return client;
+}
+
+void ParentWindowWithContext(Window* window,
+                             Window* context,
+                             const gfx::Rect& screen_bounds) {
+  DCHECK(context);
+
+  // |context| must be attached to a hierarchy with a WindowTreeClient.
+  WindowTreeClient* client = GetWindowTreeClient(context);
+  DCHECK(client);
+  Window* default_parent =
+      client->GetDefaultParent(context, window, screen_bounds);
+  default_parent->AddChild(window);
+}
+
+}  // namespace client
+}  // namespace aura