Move thumbnail to history component

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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1886 matching lines @@
         'common/mac/objc_zombie_unittest.mm',
         'common/multi_process_lock_unittest.cc',
         'common/net/url_fixer_upper_unittest.cc',
         'common/net/x509_certificate_model_unittest.cc',
         'common/partial_circular_buffer_unittest.cc',
         'common/pepper_permission_util_unittest.cc',
         'common/pref_names_util_unittest.cc',
         'common/search_urls_unittest.cc',
         'common/service_process_util_unittest.cc',
         'common/switch_utils_unittest.cc',
-        'common/thumbnail_score_unittest.cc',
         'common/variations/experiment_labels_unittest.cc',
         'common/worker_thread_ticker_unittest.cc',
         'renderer/chrome_content_renderer_client_unittest.cc',
         'renderer/content_settings_observer_unittest.cc',
         'renderer/extensions/event_unittest.cc',
         'renderer/extensions/extension_localization_peer_unittest.cc',
         'renderer/extensions/json_schema_unittest.cc',
         'renderer/extensions/messaging_utils_unittest.cc',
         'renderer/extensions/module_system_unittest.cc',
         'renderer/extensions/renderer_permissions_policy_delegate_unittest.cc',
@@ skipping 950 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }