[WIP] ash/extensions: Add experimental extension support for window-management in ash.

chrome/browser/ui/views/ash/window_manager_extension.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 CHROME_BROWSER_UI_VIEWS_ASH_WINDOW_MANAGER_EXTENSION_H_
+#define CHROME_BROWSER_UI_VIEWS_ASH_WINDOW_MANAGER_EXTENSION_H_
+
+#include <map>
+
+#include "ash/wm/window_manager_extension.h"
+
+class WindowManagerExtension : public ash::WindowManagerExtensionDelegate {
+ public:
+  WindowManagerExtension();
+
+  virtual ~WindowManagerExtension();
+
+ private:
+  void DispatchEventForWindow(const aura::Window* window,
+                              const char event_name[]);
+
+  // Overridden from ash::WindowManagerExtensionDelegate.
+  virtual void OnWindowCreated(const aura::Window* window) OVERRIDE;
+  virtual void OnWindowClosed(const aura::Window* window) OVERRIDE;
+  virtual void OnWindowHidden(const aura::Window* window) OVERRIDE;
+  virtual void OnWindowShown(const aura::Window* window) OVERRIDE;
+  virtual void OnActiveWindowChanged(const aura::Window* window) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowManagerExtension);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_ASH_WINDOW_MANAGER_EXTENSION_H_