[win] Change app launcher profile indicator to be a menu.

ui/views/controls/menu/menu_model_adapter.h

Index: ui/views/controls/menu/menu_model_adapter.h
diff --git a/ui/views/controls/menu/menu_model_adapter.h b/ui/views/controls/menu/menu_model_adapter.h
index 9c3e84e72dcd17756107cf4cf9594664eee8849b..5e2dd88e346b014bbc7d293cbc6fec71b872c51e 100644
--- a/ui/views/controls/menu/menu_model_adapter.h
+++ b/ui/views/controls/menu/menu_model_adapter.h
@@ -39,6 +39,10 @@ class VIEWS_EXPORT MenuModelAdapter : public MenuDelegate {
   int triggerable_event_flags() const { return triggerable_event_flags_; }
 
  protected:
+  // Subclasses override this to allow custom items to be added to the menu.
+  // The caller takes ownership of the returned MenuItemView.
+  virtual MenuItemView* CreateCustomItem(MenuItemView* parent, int id);
+
   // views::MenuDelegate implementation.
   virtual void ExecuteCommand(int id) OVERRIDE;
   virtual void ExecuteCommand(int id, int mouse_event_flags) OVERRIDE;