[NOT FOR REVIEW] ash: Add some implementation for the window management extension API.

chrome/browser/ui/ash/window_manager_extension.h

Index: chrome/browser/ui/ash/window_manager_extension.h
diff --git a/chrome/browser/ui/ash/window_manager_extension.h b/chrome/browser/ui/ash/window_manager_extension.h
new file mode 100644
index 0000000000000000000000000000000000000000..55f6a178e6ffb5e536e6f1c5d7ff44c544eb4ff5
--- /dev/null
+++ b/chrome/browser/ui/ash/window_manager_extension.h
@@ -0,0 +1,32 @@
+// 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_ASH_WINDOW_MANAGER_EXTENSION_H_
+#define CHROME_BROWSER_UI_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(aura::Window* window,
+                              const char event_name[]);
+
+  // Overridden from ash::WindowManagerExtensionDelegate.
+  virtual void OnWindowCreated(aura::Window* window) OVERRIDE;
+  virtual void OnWindowClosed(aura::Window* window) OVERRIDE;
+  virtual void OnWindowHidden(aura::Window* window) OVERRIDE;
+  virtual void OnWindowShown(aura::Window* window) OVERRIDE;
+  virtual void OnActiveWindowChanged(aura::Window* window) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowManagerExtension);
+};
+
+#endif  // CHROME_BROWSER_UI_ASH_WINDOW_MANAGER_EXTENSION_H_