Disable an extension when it is upgraded to a version that requires more

chrome/common/notification_type.h

Index: chrome/common/notification_type.h
diff --git a/chrome/common/notification_type.h b/chrome/common/notification_type.h
index 2a04ffebda73c02ad6cd998f2b482fff8068d18d..8ba2d8443bd2bec8fa1e62e4ce1233db624949db 100644
--- a/chrome/common/notification_type.h
+++ b/chrome/common/notification_type.h
@@ -603,6 +603,10 @@ class NotificationType {
     // Sent when new extensions are loaded. The details are an ExtensionList*.
     EXTENSIONS_LOADED,
 
+    // Sent when attempting to load a new extension, but they are disabled. The
+    // details are an Extension*.
+    EXTENSION_UPDATE_DISABLED,
+
     // Sent when a new theme is installed. The details are an Extension.
     THEME_INSTALLED,