[Reland] [Extensions] Make extension message bubble factory platform-abstract

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

Index: chrome/browser/ui/views/toolbar/toolbar_view.h
diff --git a/chrome/browser/ui/views/toolbar/toolbar_view.h b/chrome/browser/ui/views/toolbar/toolbar_view.h
index 32fe3f6c55a698d1c86314dc95e64d85b3edcafd..0e60a162b362778aa101fed2904959b3913e17f6 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_view.h
+++ b/chrome/browser/ui/views/toolbar/toolbar_view.h
@@ -31,7 +31,6 @@ class WrenchToolbarButton;
 namespace extensions {
 class Command;
 class Extension;
-class ExtensionMessageBubbleFactory;
 }
 
 namespace views {
@@ -137,7 +136,6 @@ class ToolbarView : public views::AccessiblePaneView,
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   // views::WidgetObserver:
-  void OnWidgetVisibilityChanged(views::Widget* widget, bool visible) override;
   void OnWidgetActivationChanged(views::Widget* widget, bool active) override;
 
   // content::NotificationObserver:
@@ -245,11 +243,6 @@ class ToolbarView : public views::AccessiblePaneView,
   scoped_ptr<WrenchMenuModel> wrench_menu_model_;
   scoped_ptr<WrenchMenu> wrench_menu_;
 
-  // The factory to create bubbles to warn about dangerous/suspicious
-  // extensions.
-  scoped_ptr<extensions::ExtensionMessageBubbleFactory>
-      extension_message_bubble_factory_;
-
   // A list of listeners to call when the menu opens.
   ObserverList<views::MenuListener> menu_listeners_;