Index: mojo/services/public/cpp/view_manager/view_manager_delegate.h |
diff --git a/mojo/services/public/cpp/view_manager/view_manager_delegate.h b/mojo/services/public/cpp/view_manager/view_manager_delegate.h |
index bceee02d9bea903559aab179e2c7df4c292cd891..d765bda6d26a49736470dc5c146bfad0bdcd9e5b 100644 |
--- a/mojo/services/public/cpp/view_manager/view_manager_delegate.h |
+++ b/mojo/services/public/cpp/view_manager/view_manager_delegate.h |
@@ -13,7 +13,8 @@ class ViewManager; |
class ViewManagerDelegate { |
public: |
- virtual void OnRootAdded(ViewManager* view_manager, Node* root) {} |
+ virtual void OnRootAdded(ViewManager* view_manager, Node* root) = 0; |
+ virtual void OnViewManagerDisconnected(ViewManager* view_manager) = 0; |
protected: |
virtual ~ViewManagerDelegate() {} |