Use ink drop hover for focus states on toolbar buttons and location

chrome/browser/ui/views/toolbar/app_menu_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_APP_MENU_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_APP_MENU_BUTTON_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 94 matching lines @@
   // App model and menu.
   // Note that the menu should be destroyed before the model it uses, so the
   // menu should be listed later.
   std::unique_ptr<AppMenuModel> menu_model_;
   std::unique_ptr<AppMenu> menu_;
 
   // Any trailing margin to be applied. Used when the browser is in
   // a maximized state to extend to the full window width.
   int margin_trailing_;
 
-  // Controls the visual feedback for the button state.
-  std::unique_ptr<views::InkDropDelegate> ink_drop_delegate_;
-
   // Used to spawn weak pointers for delayed tasks to open the overflow menu.
   base::WeakPtrFactory<AppMenuButton> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppMenuButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_APP_MENU_BUTTON_H_