[Extensions Mac] Implement developer mode warning on mac

chrome/browser/ui/views/extensions/extension_toolbar_icon_surfacing_bubble_views.h

 // Copyright 2015 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_EXTENSIONS_EXTENSION_TOOLBAR_ICON_SURFACING_BUBBLE_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_TOOLBAR_ICON_SURFACING_BUBBLE_VIEWS_H_
 
 #include "base/macros.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/controls/button/button.h"
 
+class Profile;
 class ToolbarActionsBarBubbleDelegate;
 
+// TODO(devlin): It might be best for this to combine with
+// ExtensionMessageBubbleView, similar to what we do on Mac.
 class ExtensionToolbarIconSurfacingBubble : public views::BubbleDelegateView,
                                             public views::ButtonListener {
  public:
   ExtensionToolbarIconSurfacingBubble(
       views::View* anchor_view,
-      ToolbarActionsBarBubbleDelegate* delegate);
+      scoped_ptr<ToolbarActionsBarBubbleDelegate> delegate);
   ~ExtensionToolbarIconSurfacingBubble() override;
 
+  void Show();
+
  private:
   void Init() override;
   void OnWidgetDestroying(views::Widget* widget) override;
 
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
-  ToolbarActionsBarBubbleDelegate* delegate_;
+  scoped_ptr<ToolbarActionsBarBubbleDelegate> delegate_;
 
   // Whether or not the user acknowledged the bubble by clicking the "ok"
   // button.
   bool acknowledged_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionToolbarIconSurfacingBubble);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_TOOLBAR_ICON_SURFACING_BUBBLE_VIEWS_H_