[Extensions UI] Use the ExtensionMessageBubbleBridge for Views platforms

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

 // Copyright 2016 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_ACTIONS_BAR_BUBBLE_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_ACTIONS_BAR_BUBBLE_VIEWS_H_
 
+#include <memory>
+
 #include "base/macros.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/controls/button/button.h"
 
 class Profile;
 class ToolbarActionsBarBubbleDelegate;
 class ToolbarActionsBarBubbleViewsUnitTest;
 
 namespace views {
 class Label;
@@ skipping 18 matching lines @@
   const views::LabelButton* dismiss_button() const { return dismiss_button_; }
 
  private:
   // views::BubbleDelegateView:
   void Init() override;
   void OnWidgetDestroying(views::Widget* widget) override;
 
   // views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
+  views::View* anchor_view_;
+
   std::unique_ptr<ToolbarActionsBarBubbleDelegate> delegate_;
 
   views::Label* heading_label_;
   views::Label* content_label_;
 
   views::LabelButton* dismiss_button_;
   views::LabelButton* action_button_;
 
   // Whether or not the user acknowledged the bubble by clicking the "ok"
   // button.
   bool acknowledged_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsBarBubbleViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_ACTIONS_BAR_BUBBLE_VIEWS_H_