Implement Action Box button

chrome/browser/ui/views/location_bar/action_box_button_view.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_LOCATION_BAR_ACTION_BOX_BUTTON_VIEW_H_
+#define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ACTION_BOX_BUTTON_VIEW_H_
+#pragma once
+
+#include "ui/views/controls/button/menu_button.h"
+#include "ui/views/controls/button/menu_button_listener.h"
+
+// ActionBoxButtonView displays a plus button with assosiated menu.
+class ActionBoxButtonView : public views::MenuButton,
+                            public views::MenuButtonListener {
+ public:
+  ActionBoxButtonView();
+  virtual ~ActionBoxButtonView();
+
+ private:
+  void SetImages();
+
+  // CustomButton
+  virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
+
+  // MenuButtonListener
+  virtual void OnMenuButtonClicked(View* source,
+                                   const gfx::Point& point) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(ActionBoxButtonView);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ACTION_BOX_BUTTON_VIEW_H_