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diff --git a/views/desktop/desktop_window_manager.h b/views/desktop/desktop_window_manager.h
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+++ b/views/desktop/desktop_window_manager.h
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+// Copyright (c) 2011 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 VIEWS_DESKTOP_DESKTOP_WINDOW_MANAGER_H_
+#define VIEWS_DESKTOP_DESKTOP_WINDOW_MANAGER_H_
+
+#include "base/compiler_specific.h"
+#include "base/scoped_ptr.h"
+#include "views/widget/window_manager.h"
+
+namespace gfx {
+class Point;
+}
+
+namespace views {
+class Widget;
+
+namespace desktop {
+class WindowController;
+
+// A tentative window manager for views destktop until we have *right*
+// implementation based on aura/layer API. This is minimum
+// implmenetation and complicated actio like moving transformed window
+// doesn't work.  TODO(oshima): move active widget to WindowManager.
+class DesktopWindowManager : public views::WindowManager {
+ public:
+  DesktopWindowManager(Widget* desktop);
+  virtual ~DesktopWindowManager();
+
+  // views::WindowManager implementations:
+  virtual void StartMoveDrag(views::Widget* widget,
+                             const gfx::Point& point) OVERRIDE;
+  virtual void StartResizeDrag(views::Widget* widget,
+                               const gfx::Point& point,
+                               int hittest_code);
+  virtual bool SetMouseCapture(views::Widget* widget) OVERRIDE;
+  virtual bool ReleaseMouseCapture(views::Widget* widget) OVERRIDE;
+  virtual bool HasMouseCapture(const views::Widget* widget) const OVERRIDE;
+  virtual bool HandleMouseEvent(views::Widget* widget,
+                                const views::MouseEvent& event) OVERRIDE;
+
+ private:
+  void SetMouseCapture();
+  void ReleaseMouseCapture();
+  bool HasMouseCapture() const;
+
+  views::Widget* desktop_;
+  views::Widget* mouse_capture_;
+  scoped_ptr<WindowController> window_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopWindowManager);
+};
+
+// An behavioral interface for objects implements window resize/movement.
+class WindowController {
+ public:
+  WindowController();
+  virtual ~WindowController();
+  virtual bool OnMouseEvent(const views::MouseEvent& event) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WindowController);
+};
+
+}  // namespace desktop
+}  // namespace views
+
+#endif  // VIEWS_DESKTOP_DESKTOP_WINDOW_MANAGER_H_