check_licenses, plan B:

masters/master.chromium/master_full_cfg.py

 # Copyright (c) 2011 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.
 
 from master import master_config
 from master.factory import chromium_factory
 
 defaults = {}
 
 helper = master_config.Helper(defaults)
@@ skipping 83 matching lines @@
       'arm_neon=0 '
       'arm_fpu=vfpv3-d16 '
       'chromeos=1 '  # Since this is the intersting variation.
   ),
 }
 
 B('Linux', 'linux_clobber', 'compile|testers', 'chromium',
   notify_on_missing=True)
 F('linux_clobber', linux().ChromiumFactory(
     clobber=True,
-    tests=['sizes', 'check_perms'],
+    tests=['sizes', 'check_perms', 'check_licenses'],
     options=['--compiler=goma'],
     factory_properties={'archive_build': True,
                         'gs_bucket': 'gs://chromium-browser-snapshots',
                         'show_perf_results': True,
                         'perf_id': 'chromium-rel-linux',
                         'expectations': True,
                         'generate_gtest_json': True,
                         'gclient_env': {'GYP_DEFINES':'target_arch=ia32'},}))
 
 B('Linux x64', 'linux64_clobber', 'compile|testers', 'chromium',
@@ skipping 19 matching lines @@
     compile_timeout=3600,
     options=['--build-tool=make',
              '--crosstool=' + crosstool_prefix,
              'chromeos_builder'],
     factory_properties={'archive_build': True,
                         'gs_bucket': 'gs://chromium-browser-snapshots',
                         'gclient_env': arm_gclient_env}))
 
 def Update(config, active_master, c):
   return helper.Update(c)