Notify users about certain changes in installed extensions.

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index e12bd6f411c81b7b336e8f4c602859ae3a3289c3..8e3eaf36b987fcb335e52d421e1c769c76efa14b 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -52,6 +52,7 @@ class ExtensionContentSettingsStore;
 class ExtensionCookiesEventRouter;
 class ExtensionDownloadsEventRouter;
 class ExtensionFileBrowserEventRouter;
+class ExtensionGlobalError;
 class ExtensionHistoryEventRouter;
 class ExtensionInstallUI;
 class ExtensionManagementEventRouter;
@@ -507,6 +508,18 @@ class ExtensionService
 
   virtual void OnExternalProviderReady() OVERRIDE;
 
+  // Once all external providers are done, generate any needed alerts about
+  // extensions.
+  void IdentifyAlertableExtensions();
+
+  // The user has acknowledged the batch of alerts, so mark all the
+  // alertable extensions accordingly.
+  void HandleExtensionAlertAccept(const ExtensionGlobalError& global_error);
+
+  // The user wants to get more details about the alerts. Open the
+  // Extensions page.
+  void HandleExtensionAlertDetails(const ExtensionGlobalError& global_error);
+
   // NotificationObserver
   virtual void Observe(int type,
                        const NotificationSource& source,