Change the "Disable outdated plug-ins" lab to block them instead.

chrome/browser/about_flags.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 131 matching lines @@
     0,
 #endif
     kOsWin | kOsLinux | kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kEnableRemoting)
   },
   {
     "disable-outdated-plugins",  // FLAGS:RECORD_UMA
     IDS_FLAGS_DISABLE_OUTDATED_PLUGINS_NAME,
     IDS_FLAGS_DISABLE_OUTDATED_PLUGINS_DESCRIPTION,
     kOsAll,
-    SINGLE_VALUE_TYPE(switches::kDisableOutdatedPlugins)
+    SINGLE_VALUE_TYPE(switches::kBlockOutdatedPlugins)
   },
   {
     "xss-auditor",  // FLAGS:RECORD_UMA
     IDS_FLAGS_XSS_AUDITOR_NAME,
     IDS_FLAGS_XSS_AUDITOR_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kEnableXSSAuditor)
   },
   {
     "background-webapps",  // FLAGS:RECORD_UMA
@@ skipping 534 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags