Add multi_process_lock to chrome/common

chrome/chrome_tests.gypi

 # 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.
 
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_dll_resource.h',
       'common/pref_names.cc',
       'common/pref_names.h',
@@ skipping 1539 matching lines @@
         'common/extensions/update_manifest_unittest.cc',
         'common/extensions/url_pattern_unittest.cc',
         'common/extensions/user_script_unittest.cc',
         'common/font_descriptor_mac_unittest.mm',
         'common/gpu_info_unittest.cc',
         'common/gpu_messages_unittest.cc',
         'common/important_file_writer_unittest.cc',
         'common/json_pref_store_unittest.cc',
         'common/json_value_serializer_unittest.cc',
         'common/mru_cache_unittest.cc',
+        'common/multi_process_lock_unittest.cc',
         'common/net/gaia/gaia_authenticator_unittest.cc',
         'common/net/gaia/gaia_authenticator2_unittest.cc',
         'common/net/gaia/gaia_authenticator2_unittest.h',
         'common/net/url_fetcher_unittest.cc',
         'common/net/test_url_fetcher_factory.cc',
         'common/net/test_url_fetcher_factory.h',
         'common/notification_service_unittest.cc',
         'common/process_watcher_unittest.cc',
         'common/property_bag_unittest.cc',
         'common/render_messages_unittest.cc',
@@ skipping 1785 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
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