MockLogSource      56 base/logging_unittest.cc   MockLogSource mock_log_source;
MockLogSource     147 base/logging_unittest.cc   MockLogSource mock_log_source;
MockLogSource     175 base/logging_unittest.cc   MockLogSource mock_log_source, uncalled_mock_log_source;
MockLogSource     205 base/logging_unittest.cc   MockLogSource mock_log_source;