Disable outdated plugins, block non-sandboxed plugins.

chrome/browser/plugin_updater.h

Index: chrome/browser/plugin_updater.h
diff --git a/chrome/browser/plugin_updater.h b/chrome/browser/plugin_updater.h
index fd34b9336bbfbf5b48a6cfeb74cf956fe4b5e19e..98e2cc31d851ff96a74c3742bb6ff7a0cf565bcd 100644
--- a/chrome/browser/plugin_updater.h
+++ b/chrome/browser/plugin_updater.h
@@ -30,6 +30,11 @@ void EnablePluginFile(bool enable, const FilePath::StringType& file_path);
 // Disable all plugin groups as defined by the user's preference file.
 void DisablePluginGroupsFromPrefs(Profile* profile);
 
+// Disable all plugins groups that are known to be outdated, according to the
+// information hardcoded in PluginGroup, to make sure that they can't be loaded
+// on a web page and instead show a UI to update to the latest version.
+void DisableOutdatedPluginGroups();
+
 // Write the enable/disable status to the user's preference file.
 void UpdatePreferences(Profile* profile);