Add python coverage module to third_party

tools/checklicenses/checklicenses.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Makes sure that all files contain proper licensing information."""
 
 
 import json
 import optparse
@@ skipping 282 matching lines @@
     'third_party/ocmock/OCMock': [  # http://crbug.com/98454
         'UNKNOWN',
     ],
     'third_party/ply/__init__.py': [
         'UNKNOWN',
     ],
     'third_party/protobuf': [  # http://crbug.com/98455
         'UNKNOWN',
     ],
 
-    # http://crbug.com/222831
-    # https://bitbucket.org/eliben/pyelftools/issue/12
-    'third_party/pyelftools': [
+    # https://bitbucket.org/ned/coveragepy/issue/313/add-license-file-containing-2-3-or-4
+    # BSD 2-clause license.
+    'third_party/pycoverage': [
         'UNKNOWN',
     ],
 
+    'third_party/pyelftools': [ # http://crbug.com/222831
+        'UNKNOWN',
+    ],
     'third_party/scons-2.0.1/engine/SCons': [  # http://crbug.com/98462
         'UNKNOWN',
     ],
     'third_party/simplejson': [
         'UNKNOWN',
     ],
     'third_party/skia': [  # http://crbug.com/98463
         'UNKNOWN',
     ],
     'third_party/snappy/src': [  # http://crbug.com/98464
@@ skipping 220 matching lines @@
                            action='store_true',
                            default=False,
                            help='Ignore path-specific license whitelist.')
   option_parser.add_option('--json', help='Path to JSON output file')
   options, args = option_parser.parse_args()
   return check_licenses(options, args)
 
 
 if '__main__' == __name__:
   sys.exit(main())