history_service 203 chrome/browser/history/top_sites_impl_unittest.cc HistoryService* history_service() { history_service 104 chrome/browser/safe_browsing/browser_feature_extractor_unittest.cc HistoryService* history_service() { history_service 218 chrome/browser/safe_browsing/malware_details_unittest.cc HistoryService* history_service() {