Add test for ProcessSingleton hung rendezvous case.

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'variables': {
     'chrome_unit_tests_sources': [
       '../components/autofill/content/renderer/test_password_autofill_agent.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.h',
       '../components/autofill/content/renderer/test_password_generation_agent.cc',
       '../components/autofill/content/renderer/test_password_generation_agent.h',
@@ skipping 182 matching lines @@
       'browser/prefs/tracked/pref_hash_filter_unittest.cc',
       'browser/prefs/tracked/pref_hash_store_impl_unittest.cc',
       'browser/prefs/tracked/pref_service_hash_store_contents_unittest.cc',
       'browser/prefs/tracked/segregated_pref_store_unittest.cc',
       'browser/prefs/tracked/tracked_preferences_migration_unittest.cc',
       'browser/prerender/prerender_history_unittest.cc',
       'browser/prerender/prerender_resource_throttle_unittest.cc',
       'browser/prerender/prerender_unittest.cc',
       'browser/prerender/prerender_util_unittest.cc',
       'browser/process_info_snapshot_mac_unittest.cc',
+      'browser/process_singleton_win_unittest.cc',
       'browser/profiles/file_path_verifier_win_unittest.cc',
       'browser/profiles/gaia_info_update_service_unittest.cc',
       'browser/profiles/profile_avatar_icon_util_unittest.cc',
       'browser/profiles/profile_downloader_unittest.cc',
       'browser/profiles/profile_info_cache_unittest.cc',
       'browser/profiles/profile_info_cache_unittest.h',
       'browser/profiles/profile_manager_unittest.cc',
       'browser/profiles/profile_shortcut_manager_unittest_win.cc',
       'browser/push_messaging/push_messaging_application_id_unittest.cc',
       'browser/push_messaging/push_messaging_permission_context_unittest.cc',
@@ skipping 2537 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }