StartBackgroundMode  224 chrome/browser/background/background_mode_manager.cc     StartBackgroundMode();
StartBackgroundMode  422 chrome/browser/background/background_mode_manager.cc       StartBackgroundMode();
StartBackgroundMode  578 chrome/browser/background/background_mode_manager.cc     StartBackgroundMode();
StartBackgroundMode  233 chrome/browser/background/background_mode_manager.h   void StartBackgroundMode();