[Extensions Mac] Implement developer mode warning on mac

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

Index: chrome/browser/ui/views/extensions/extension_toolbar_icon_surfacing_bubble_views.h
diff --git a/chrome/browser/ui/views/extensions/extension_toolbar_icon_surfacing_bubble_views.h b/chrome/browser/ui/views/extensions/extension_toolbar_icon_surfacing_bubble_views.h
index d1326dfd00e402a9c40738944f44470ddd47302f..ca23dd93aaa11af23ed2e539fc63b3fef0588219 100644
--- a/chrome/browser/ui/views/extensions/extension_toolbar_icon_surfacing_bubble_views.h
+++ b/chrome/browser/ui/views/extensions/extension_toolbar_icon_surfacing_bubble_views.h
@@ -9,23 +9,28 @@
 #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.