Revert of [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 0e60a162b362778aa101fed2904959b3913e17f6..32fe3f6c55a698d1c86314dc95e64d85b3edcafd 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_view.h
+++ b/chrome/browser/ui/views/toolbar/toolbar_view.h
@@ -31,6 +31,7 @@
 namespace extensions {
 class Command;
 class Extension;
+class ExtensionMessageBubbleFactory;
 }
 
 namespace views {
@@ -136,6 +137,7 @@
   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:
@@ -243,6 +245,11 @@
   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_;