Change the "Disable outdated plug-ins" lab to block them instead.

chrome/browser/plugin_service.cc

Index: chrome/browser/plugin_service.cc
diff --git a/chrome/browser/plugin_service.cc b/chrome/browser/plugin_service.cc
index 26c9a14612ea29ddeed22eb42129ea03b42ac14a..fb7561466236e9f7a38c359f9f9c6ae937ad3768 100644
--- a/chrome/browser/plugin_service.cc
+++ b/chrome/browser/plugin_service.cc
@@ -67,11 +67,6 @@ void PluginService::InitGlobalInstance(Profile* profile) {
   // We first group the plugins and then figure out which groups to disable.
   PluginUpdater::GetInstance()->DisablePluginGroupsFromPrefs(profile);
 
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kDisableOutdatedPlugins)) {
-    NPAPI::PluginList::Singleton()->DisableOutdatedPluginGroups();
-  }
-
   // Have Chrome plugins write their data to the profile directory.
   GetInstance()->SetChromePluginDataDir(profile->GetPath());
 }