Rename StackingClient -> WindowTreeClient

ui/aura/client/stacking_client.h

-// Copyright (c) 2012 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.
-
-#ifndef UI_AURA_CLIENT_STACKING_CLIENT_H_
-#define UI_AURA_CLIENT_STACKING_CLIENT_H_
-
-#include "ui/aura/aura_export.h"
-
-namespace gfx {
-class Rect;
-}
-
-namespace aura {
-class Window;
-namespace client {
-
-// An interface implemented by an object that stacks windows.
-class AURA_EXPORT StackingClient {
- public:
-  virtual ~StackingClient() {}
-
-  // Called by the Window when it looks for a default parent. Returns the
-  // window that |window| should be added to instead. |context| provides a
-  // Window (generally a RootWindow) that can be used to determine which
-  // desktop type the default parent should be chosen from.  NOTE: this may
-  // have side effects. It should only be used when |window| is going to be
-  // immediately added.
-  //
-  // TODO(erg): Remove |context|, and maybe after oshima's patch lands,
-  // |bounds|.
-  virtual Window* GetDefaultParent(
-      Window* context,
-      Window* window,
-      const gfx::Rect& bounds) = 0;
-};
-
-// Set/Get a stacking client for a specific window. Setting the stacking client
-// sets the stacking client on the window's RootWindow, not the window itself.
-// Likewise getting obtains it from the window's RootWindow. If |window| is
-// non-NULL it must be in a RootWindow. If |window| is NULL, the default
-// stacking client is used.
-AURA_EXPORT void SetStackingClient(Window* window,
-                                   StackingClient* stacking_client);
-StackingClient* GetStackingClient(Window* window);
-
-}  // namespace client
-}  // namespace aura
-
-#endif  // UI_AURA_CLIENT_STACKING_CLIENT_H_