Add MD ink drop ripple to shelf app items

chrome/browser/ui/views/toolbar/toolbar_button.h

 // Copyright 2013 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_TOOLBAR_TOOLBAR_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_BUTTON_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/views/context_menu_controller.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/button/label_button.h"
 
 class Profile;
 
 namespace test {
 class ToolbarButtonTestApi;
 }
 
 namespace ui {
 class MenuModel;
 }
 
 namespace views {
-class InkDropDelegate;
 class MenuModelAdapter;
 class MenuRunner;
 }
 
 // This class provides basic drawing and mouse-over behavior for buttons
 // appearing in the toolbar.
 class ToolbarButton : public views::LabelButton,
                       public views::ContextMenuController {
  public:
   // Takes ownership of the |model|, which can be null if no menu
@@ skipping 63 matching lines @@
   // Menu runner to display drop down menu.
   std::unique_ptr<views::MenuRunner> menu_runner_;
 
   // A factory for tasks that show the dropdown context menu for the button.
   base::WeakPtrFactory<ToolbarButton> show_menu_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_BUTTON_H_