GetHistoryIfExists  447 chrome/browser/prerender/prerender_local_predictor.cc     HistoryService* history = GetHistoryIfExists();
GetHistoryIfExists  541 chrome/browser/prerender/prerender_local_predictor.cc   HistoryService* history = GetHistoryIfExists();
GetHistoryIfExists  983 chrome/browser/prerender/prerender_local_predictor.cc   HistoryService* history = GetHistoryIfExists();
GetHistoryIfExists  166 chrome/browser/prerender/prerender_local_predictor.h   HistoryService* GetHistoryIfExists() const;