MockFileStatusObserver 293 chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service_fake_unittest.cc StrictMock<MockFileStatusObserver>* mock_file_status_observer() { MockFileStatusObserver 441 chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service_fake_unittest.cc StrictMock<MockFileStatusObserver> mock_file_status_observer_;