1 files changed, 3 insertions, 0 deletions
diff --git a/chrome/browser/extensions/external_extension_provider.h b/chrome/browser/extensions/external_extension_provider.h
index f431bfc..ffbb654 100644
--- a/chrome/browser/extensions/external_extension_provider.h
+++ b/chrome/browser/extensions/external_extension_provider.h
@@ -27,6 +27,9 @@ class ExternalExtensionProvider {
                                            const Version* version,
                                            const FilePath& path,
                                            Extension::Location location) = 0;
+
+   protected:
+     virtual ~Visitor() {}
   };
 
   virtual ~ExternalExtensionProvider() {}